---
title: The InsideGuide
description: "The InsideGuide: a blog about biomarkers, blood analysis, athletic performance, nutrition software, and optimizing your fitness."
---

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- [Nutrition](https://blog.insidetracker.com/nutrition) Open the submenu 
    - [Food](https://blog.insidetracker.com/topic/food)
    - [Supplements](https://blog.insidetracker.com/topic/supplements)
- [Health + Wellness](https://blog.insidetracker.com/health-wellness) Open the submenu 
    - [Heart health](https://blog.insidetracker.com/topic/heart-health)
    - [Women's health](https://blog.insidetracker.com/topic/womens-health)
    - [Sleep](https://blog.insidetracker.com/topic/sleep)
    - [Energy](https://blog.insidetracker.com/topic/boost-energy)
    - [Cognition](https://blog.insidetracker.com/topic/Cognition)
    - [Immunity](https://blog.insidetracker.com/topic/immunity)
    - [Stress](https://blog.insidetracker.com/topic/reduce-stress)
- [Performance](https://blog.insidetracker.com/performance) Open the submenu 
    - [Endurance](https://blog.insidetracker.com/topic/endurance)
    - [Strength + Fitness](https://blog.insidetracker.com/topic/strength-fitness)
- [Longevity](https://blog.insidetracker.com/longevity)
- More... Open the submenu 
    - [Recovery](https://blog.insidetracker.com/recovery)
    - [Community Stories](https://blog.insidetracker.com/community-stories)
    - [InsideTracker Updates](https://blog.insidetracker.com/insidetracker-updates)

- [Home](https://blog.insidetracker.com/)
- [Courses](https://info.insidetracker.com/live-healthier-longer-course)
- [Nutrition](https://blog.insidetracker.com/nutrition) Open the submenu 
    - [Food](https://blog.insidetracker.com/topic/food)
    - [Supplements](https://blog.insidetracker.com/topic/supplements)
- [Health + wellness](https://blog.insidetracker.com/health-wellness) Open the submenu 
    - [Heart health](https://blog.insidetracker.com/topic/heart-health)
    - [Gut health](https://blog.insidetracker.com/topic/gut-health)
    - [Sleep](https://blog.insidetracker.com/topic/sleep)
    - [Energy](https://blog.insidetracker.com/topic/boost-energy)
    - [Cognition](https://blog.insidetracker.com/topic/Cognition)
    - [Immunity](https://blog.insidetracker.com/topic/immunity)
    - [Stress](https://blog.insidetracker.com/topic/reduce-stress)
- [Performance](https://blog.insidetracker.com/performance) Open the submenu 
    - [Endurance](https://blog.insidetracker.com/topic/endurance)
    - [Strength + fitness](https://blog.insidetracker.com/topic/strength-fitness)
- [Recovery](https://blog.insidetracker.com/recovery)
- [Longevity](https://blog.insidetracker.com/longevity)
- [Community stories](https://blog.insidetracker.com/community-stories)
- [InsideTracker updates](https://blog.insidetracker.com/insidetracker-updates)

#### Search the InsideGuide

#### Browse biomarkers

##### Energy + Metabolism

- [Glucose](https://blog.insidetracker.com/topic/glucose)
- [Cholesterol](https://blog.insidetracker.com/topic/Cholesterol)
- [Triglycerides](https://blog.insidetracker.com/topic/Triglycerides)

##### Bone Health

- [Calcium](https://blog.insidetracker.com/topic/Calcium)
- [Vitamin D](https://blog.insidetracker.com/topic/Vitamin-D)

##### Inflammation

- [hsCRP](https://blog.insidetracker.com/topic/hsCRP)
- [White blood cells](https://blog.insidetracker.com/topic/White-blood-cells)

##### Strength + Endurance

- [Creatine Kinase](https://blog.insidetracker.com/topic/Creatine-Kinase)
- [Testosterone](https://blog.insidetracker.com/topic/Testosterone)
- [DHEAS](https://blog.insidetracker.com/topic/DHEAS)
- [Cortisol](https://blog.insidetracker.com/topic/Cortisol)
- [Sex-Hormone Binding Globulin](https://blog.insidetracker.com/topic/Sex-Hormone-Binding-Globulin)

##### Brain + Body

- [Magnesium](https://blog.insidetracker.com/topic/Magnesium)
- [Vitamin B12](https://blog.insidetracker.com/topic/Vitamin-B12)

##### Electrolytes

- [Potassium](https://blog.insidetracker.com/topic/Potassium)
- [Sodium](https://blog.insidetracker.com/topic/Sodium)

##### Oxygen + Performance

- [Ferritin](https://blog.insidetracker.com/topic/Ferritin)
- [Hemoglobin](https://blog.insidetracker.com/topic/Hemoglobin)
- [Iron](https://blog.insidetracker.com/topic/Iron)

##### Liver Enzymes

- [ALT, AST + GGT](https://blog.insidetracker.com/topic/alt-ast-ggt)

#### InsideTracker Plans

- [Ultimate](https://store.insidetracker.com/products/ultimate)
- [Essentials](https://store.insidetracker.com/products/essentials)
- [InnerAge 2.0](https://store.insidetracker.com/products/innerage)
- [DNA Kit](https://store.insidetracker.com/products/dna-kit)

# The InsideGuide

### Discover what makes your body tick

[![](https://blog.insidetracker.com/hubfs/Group%201980471099a.jpg)](https://blog.insidetracker.com/should-everybody-wear-a-fitness-tracker)

#### [Should Everybody Really Be Wearing a Fitness Tracker?](https://blog.insidetracker.com/should-everybody-wear-a-fitness-tracker)

[![](https://blog.insidetracker.com/hubfs/weightloss.jpg)](https://blog.insidetracker.com/biomarkers-and-weight-loss)

Biomarkers  & Weight management

###### [12 Blood Biomarkers To Watch if You’re Trying To Lose Weight](https://blog.insidetracker.com/biomarkers-and-weight-loss)

[![](https://blog.insidetracker.com/hubfs/restful%20nights%20sleep.jpg)](https://blog.insidetracker.com/get-a-more-restful-nights-sleep-without-changing-bedtime)

Magnesium  & Cortisol  &

###### [Get A More Restful Night's Sleep Without Changing Your Bedtime](https://blog.insidetracker.com/get-a-more-restful-nights-sleep-without-changing-bedtime)

[![](https://blog.insidetracker.com/hubfs/Frame%2071152-1.jpg)](https://blog.insidetracker.com/men-and-longevity)

Blood test  & Mens health  &

###### [Men die too young. Here are 3 ways to fix that.](https://blog.insidetracker.com/men-and-longevity)

[![](https://blog.insidetracker.com/hubfs/IT_Membership.png)](https://blog.insidetracker.com/insidetracker-membership-benefits)

InsideTracker updates

###### [How an InsideTracker Membership Uses Data to Add Healthy Years to Your Life](https://blog.insidetracker.com/insidetracker-membership-benefits)

## Health & Wellness

[View more](https://blog.insidetracker.com/topic/health-wellness)

[![](https://blog.insidetracker.com/hubfs/Mask-groupa.jpg)](https://blog.insidetracker.com/strengthspan-aging)

 Why “Strengthspan” Becomes More Important With Age

[Read article](https://blog.insidetracker.com/strengthspan-aging)

[![](https://blog.insidetracker.com/hubfs/Met%203.jpg)](https://blog.insidetracker.com/habit-loops)

 Use This Trick to Make Your Healthy Habits Stick for Good

[Read article](https://blog.insidetracker.com/habit-loops)

[![Blood Test Online](https://blog.insidetracker.com/hubfs/Group%2013a.jpg)](https://blog.insidetracker.com/holiday-blood-biomarker-impact)

 How the holidays literally change your blood

[Read article](https://blog.insidetracker.com/holiday-blood-biomarker-impact)

[Go to Blog](https://blog.insidetracker.com/topic/health-wellness)

### Longevity by Design

#### The Podcast

[View all episodes](https://blog.insidetracker.com/topic/podcast)

Subscribe on:

- [![ApplePodcast](https://blog.insidetracker.com/hubfs/ApplePodcast.png) Apple](https://podcasts.apple.com/us/podcast/longevity-by-design/id1566067452)
- [![SpotifyPodcast](https://blog.insidetracker.com/hubfs/SpotifyPodcast.png) Spotify](https://open.spotify.com/show/04NcUniuNSDObfUpY8aiPO)

[![](https://blog.insidetracker.com/hubfs/86dzy7kt4%20-%20Inside%20Tracker%20-%20Longevity%20by%20Design%20-%20Dr.%20Andrea%20Maier%20-%20Episode%20Thumbnail_01.jpg)](https://blog.insidetracker.com/do-longevity-supplements-really-work)

[Do Longevity Supplements Really Work?](https://blog.insidetracker.com/do-longevity-supplements-really-work)

[![](https://blog.insidetracker.com/hubfs/86dztppxp%20-%20Inside%20Tracker%20-%20Longevity%20by%20Design%20-%20Dr.%20Uri%20Alon%20-%20Episode%20Thumbnail_01.jpg)](https://blog.insidetracker.com/what-houses-garbage-and-trucks-teach-us-about-aging-with-dr.-uri-alon)

[What Houses, Garbage, and Trucks Teach Us About Aging with Dr. Uri Alon](https://blog.insidetracker.com/what-houses-garbage-and-trucks-teach-us-about-aging-with-dr.-uri-alon)

[![](https://blog.insidetracker.com/hubfs/86dz15x3g%20-%20Inside%20Tracker%20-%20Longevity%20by%20Design%20-%20Dr.%20Terrie%20Moffitt%20-%20Episode%20Thumbnail_01.jpg)](https://blog.insidetracker.com/born-to-live-longer-inside-the-genetics-and-biology-of-centenarians)

[Born to Live Longer? Inside the Genetics and Biology of Centenarians](https://blog.insidetracker.com/born-to-live-longer-inside-the-genetics-and-biology-of-centenarians)

[View all episodes](https://blog.insidetracker.com/topic/podcast)

Subscribe on:

- [![ApplePodcast](https://blog.insidetracker.com/hubfs/ApplePodcast.png) Apple](https://podcasts.apple.com/us/podcast/longevity-by-design/id1566067452)
- [![SpotifyPodcast](https://blog.insidetracker.com/hubfs/SpotifyPodcast.png) Spotify](https://open.spotify.com/show/04NcUniuNSDObfUpY8aiPO)

## Train Like a Woman

Dr. Stacy Sims, author of ROAR, spoke with InsideTracker's Stevie Lyn Smith, MS, RDN, CSSD, CDN answering your questions about...

-Fasting, training, and hormones   
-Training and menstruation   
-Staying healthy and active during menopause

Watch the full interview [here](https://www.youtube.com/watch?v=mvwJENne-n4).

 

![Stacy-Sims3](https://blog.insidetracker.com/hubfs/Stacy-Sims3.png)

 

## InsideTracker Updates

[View more](https://blog.insidetracker.com/topic/insidetracker-updates)

[![](https://blog.insidetracker.com/hubfs/Group%201980470996%20(1).png)](https://blog.insidetracker.com/ask-terra)

 How to use Terra, InsideTracker’s AI Health Guide

[Read article](https://blog.insidetracker.com/ask-terra)

[![](https://blog.insidetracker.com/hubfs/Frame%2071163.png)](https://blog.insidetracker.com/healthspan-habit-report)

 How Your “Healthspan Habit Report” Makes You Healthier Every Week

[Read article](https://blog.insidetracker.com/healthspan-habit-report)

[![](https://blog.insidetracker.com/hubfs/Header%20Image.png)](https://blog.insidetracker.com/healthspan-category-testing)

 The 10 Blood Tests That Focus on Your Health Goals

[Read article](https://blog.insidetracker.com/healthspan-category-testing)

[Go to Blog](https://blog.insidetracker.com/topic/insidetracker-updates)

### Explore our guides

[![Do you need supplements eBook](https://blog.insidetracker.com/hubfs/Do-you-need-supplements-eBook-1.jpg)](https://hubs.li/Q01B8xB50)

[![Screenshot 2025-07-24 at 10.53.34 AM](https://blog.insidetracker.com/hubfs/Screenshot%202025-07-24%20at%2010.53.34%20AM.png)](https://info.insidetracker.com/100-healthy-habits-ebook)

[![Best ways to heal your gut eBook](https://blog.insidetracker.com/hubfs/Gut%20Health%2006.22%20Update-01.jpg)](https://hubs.li/Q01B8w4n0)

[![The Ultimate Guide to Fueling Ebook](https://blog.insidetracker.com/hubfs/The-Ultimate-Guide-to-Fueling-Ebook-(2)-1-1.jpg)](https://hubs.li/Q01B8yGS0)

[![How to sleep optimally eBook](https://blog.insidetracker.com/hubfs/Better-Sleep-Checklist-2.jpg)](https://hubs.li/Q01B8wG40)

[![5 blood biomarkers all athletes should know eBook](https://blog.insidetracker.com/hubfs/BloodBiomarkers_eBook-1.jpg)](https://hubs.li/Q01B8wPk0)

[![Biohack your health eBook](https://blog.insidetracker.com/hubfs/Biohack%20your%20health%2006.22%20Update-01.jpg)](https://hubs.li/Q01B8wVy0)

[![Rest Day Checklist](https://blog.insidetracker.com/hubfs/Rest-Day-Checklist-1.jpg)](https://hubs.li/Q01B8yDT0)

[![Vitamin D eBook](https://blog.insidetracker.com/hubfs/Vitamin%20D%2006.22%20Update-01.jpg)](https://hubs.li/Q01B8xsM0)

### Join the community

- <https://www.instagram.com/InsideTracker/>
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- [![](https://blog.insidetracker.com/hs-fs/hubfs/X%20Circle.png?width=30&name=X%20Circle.png)](https://x.com/insidetracker)

 

#### Shop

- [Membership](https://store.insidetracker.com/products/insidetracker-platform)
- [Membership + Ultimate](https://store.insidetracker.com/products/ultimate)
- [View all plans](https://store.insidetracker.com/)

#### Explore

- [Take a tour](https://www.insidetracker.com/tour/)
- [Science](https://www.insidetracker.com/science/)

#### Partner with us

- [Business](https://info.insidetracker.com/partnerships)
- [InsideTracker Pro](https://info.insidetracker.com/professionals)

#### About

- [Our Story](https://www.insidetracker.com/about)
- [Careers](https://www.insidetracker.com/careers/)
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- [![](https://blog.insidetracker.com/hs-fs/hubfs/X%20Circle.png?width=20&name=X%20Circle.png)](https://x.com/insidetracker)
- <https://www.youtube.com/user/InsideTracker2>
- <http://www.linkedin.com/company/insidetracker/>
- <https://www.instagram.com/InsideTracker/>

#### Support center

[Contact us](https://insidetracker-faq.gorgias.help/en-US/how-can-i-contact-you-288947)

 

- [![app-store](https://blog.insidetracker.com/hs-fs/hubfs/inside-tracker/images/app-store.png?width=563&name=app-store.png)](https://apps.apple.com/us/app/insidetracker/id1501674631)
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- [HSA/FSA](https://support.insidetracker.com/supportcenter/do-you-accept-an-hsa/fsa)

© 2009-2026 Segterra, Inc. All rights reserved. InsideTracker is a personalized nutrition model by Segterra. [Security.](https://info.insidetracker.com/security) Technology protected by U.S. Patent 8762167 and other patent pending applications.

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