---
title: Health & Fitness Blog - NASM | Shirley Archer, JD, MA
description: award-winning certified trainer and best-selling author of 16 books, blends evidence-based research and traditional wisdom to redefine pathways for optimal aging. Reach her at shirleyarcher.com, @shirleyarcher (Twitter), @shirleyarcher (Instagram) and @shirley_archer (Pinterest).
---

 

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# Shirley Archer, JD, MA

![Shirley Archer, JD, MA](https://blog.nasm.org/hubfs/image-png-Sep-16-2020-09-37-20-24-PM.png)

award-winning certified trainer and best-selling author of 16 books, blends evidence-based research and traditional wisdom to redefine pathways for optimal aging. Reach her at shirleyarcher.com, @shirleyarcher (Twitter), @shirleyarcher (Instagram) and @shirley\_archer (Pinterest).

### Recent Posts

[![founder of trx](https://blog.nasm.org/hs-fs/hubfs/trx-founder.jpg?width=723&name=trx-founder.jpg)](https://blog.nasm.org/the-origins-of-trx)

[American Fitness Magazine](https://blog.nasm.org/tag/american-fitness-magazine)

## [The Origins of TRX Training®: Creating a Global Training Brand](https://blog.nasm.org/the-origins-of-trx)

![Shirley Archer, JD, MA](https://blog.nasm.org/hubfs/image-png-Sep-16-2020-09-37-20-24-PM.png) 

[Shirley Archer, JD, MA](https://blog.nasm.org/author/shirley-archer) |  September 18, 2020

 Originally published in the Fall 2020 issue of American Fitness Magazine. When Randy Hetrick “MacGyvered” the predecessor for today’s TRX® Suspension Trainer™ while serving as a Navy SEAL officer in 1997, he had no idea he was creating an entirely new ...

[Read More](https://blog.nasm.org/the-origins-of-trx)

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[Workout Plans](https://blog.nasm.org/tag/workout-plans)

## [How to Help Desk-bound Clients Thrive](https://blog.nasm.org/fitness/how-to-help-desk-bound-clients-thrive)

![Shirley Archer, JD, MA](https://blog.nasm.org/hubfs/image-png-Sep-16-2020-09-37-20-24-PM.png) 

[Shirley Archer, JD, MA](https://blog.nasm.org/author/shirley-archer) |  January 28, 2020

 Originally published in the Winter 2020 issue of American Fitness Magazine. It’s likely that many of your clients spend the majority of their time sitting at a desk, staring at a screen. They then sit in their cars for a long commute. When they arrive at ...

[Read More](https://blog.nasm.org/fitness/how-to-help-desk-bound-clients-thrive)

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[CPT](https://blog.nasm.org/tag/cpt) [featured-cpt-post](https://blog.nasm.org/tag/featured-cpt-post)

## [The Coach Approach](https://blog.nasm.org/certified-personal-trainer/the-coach-approach)

![Shirley Archer, JD, MA](https://blog.nasm.org/hubfs/image-png-Sep-16-2020-09-37-20-24-PM.png) 

[Shirley Archer, JD, MA](https://blog.nasm.org/author/shirley-archer) |  July 18, 2019

 Originally published in the Summer 2019 issue of American Fitness Magazine. What do you do when life throws you a curveball? Let’s say your program design doesn’t fit a client’s current mood or your class has participants with wide-ranging ability ...

[Read More](https://blog.nasm.org/certified-personal-trainer/the-coach-approach)

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[![positive girl with a lightbulb over her head ](https://blog.nasm.org/hs-fs/hubfs/afm_column_column_specialtytraining_1-1.jpg?width=723&name=afm_column_column_specialtytraining_1-1.jpg)](https://blog.nasm.org/behavior-change-and-fitness)

[American Fitness Magazine](https://blog.nasm.org/tag/american-fitness-magazine) [Behavior Change](https://blog.nasm.org/tag/behavior-change)

## [Force of Habit: How Behavior Change Science Impacts Success](https://blog.nasm.org/behavior-change-and-fitness)

![Shirley Archer, JD, MA](https://blog.nasm.org/hubfs/image-png-Sep-16-2020-09-37-20-24-PM.png) 

[Shirley Archer, JD, MA](https://blog.nasm.org/author/shirley-archer) |  October 16, 2017

 Originally published in the fall 2017 issue of American Fitness Magazine Personal trainers know successful training programs require time, progression and individualization. Yet trainers often have clients who just don't achieve their goals-they fail to ...

[Read More](https://blog.nasm.org/behavior-change-and-fitness)

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[1](https://blog.nasm.org/author/shirley-archer/page/1)

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### [Protein and Weight Loss: How Much Protein Do You Need to Eat Per Day?](https://blog.nasm.org/nutrition/how-much-protein-should-you-eat-per-day-for-weight-loss)

By Brad Dieter

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### [Body Types: Mesomorph, Ectomorph, & Endomorph Explained](https://blog.nasm.org/body-types-mesomorph-ectomorphs-endomorphs-explained)

By Kinsey Cave

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By Andrew Payne

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### [Banded Clamshell Workout](https://blog.nasm.org/banded-clamshell-workout)

By Kinsey Cave

![](https://blog.nasm.org/hs-fs/hubfs/iStock-1131652611.jpg?width=62&name=iStock-1131652611.jpg)

### [9 of the Best Arm Sculpting Exercises to Tone & Strengthen](https://blog.nasm.org/9-best-arm-sculpting-exercises-for-tone-and-strength)

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By Bill Apablasa

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### [Discussing Alcohol & Nutrition: Making Mindful Choices](https://blog.nasm.org/alcohol-and-nutrition-making-mindful-choices)

By Darlene Marshall

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### [Global Wellness Institute: Highlighting The Fitness & Wellness Evolution](https://blog.nasm.org/a-fitness-and-wellness-evolution-look-back-ancient-civilizations-to-now)

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### [Mindfulness & Drinking: Knowing How Much Alcohol is Too Much](https://blog.nasm.org/how-to-drink-more-mindfully)

By NASM

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### [Here's How to Calculate & Improve Your RMR](https://blog.nasm.org/how-to-calculate-and-improve-rmr-resting-metabolic-rate)

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