Tone It Down

Strength Coach Jacqueline Kasen on Lifting Heavy, Peptide Culture, & the Truth About "New Healthy"

July 21, 2026·35 min
Episode Description from the Publisher

On today’s episode, Karena is live from Miami with part one of her conversation with trainer, gym executive, and fitness industry veteran Jacqueline Kasen. Jacqueline grew up behind the scenes of the at-home fitness world (her dad's company helped launch Denise Austin), studied exercise science with plans to go the medical route, and lasted exactly 10 hours as a trainer before she knew fitness was where she belonged. Karena and Jacqueline dig into the current peptide and extreme-lean culture, why lifting heavy matters more than ever (especially on GLP-1s), supplement basics, and why "back to basics" beats chasing the next trend.  [06:56] How Fitness Has Changed Over 20 Years From the Arnold Classic bodybuilder era and supplement-brand booth culture to calisthenics, the COVID minimalist-workout boom, and 10,000 steps. Where the industry is now: an "odd phase" of extreme leanness driven by the peptide boom. [11:05] The Peptide & "New Healthy" Conversation Jacqueline shares her honest, non-judgmental take on GLP-1s and peptides in the fitness industry, and the long-term health concerns she sees. [14:15] Simple, Non-Negotiable Basics Move daily, lift heavy and often, get quality sleep, eat well, spend time outside — Jacqueline's no-frills formula for feeling better fast. Karena connects it to "workout snacks" and short Tone It Up app workouts for low-motivation days. [18:31] Lifting Heavy, Explained What "heavy" actually means (RPE — rate of perceived exertion), why bone density and strength training matter especially for women as they age, and the muscle/bone loss risk tied to GLP-1 use. Form and technique over ego — and why trainers should step in to help, not judge. [23:21] Supplements, Protein & Wearables Jacqueline's take on creatine, protein targets, and why she's wary of over-measuring and fitness trackers creating unnecessary stress. [29:20] Back to Basics & the Medical-Fitness Divide A candid conversation about prescriptions vs. root-cause care, including Jacqueline's personal experience navigating a family member’s treatment. Where Jacqueline sees medicine and fitness merging — more in Part 2. Connect with Jacqueline: @kasenfitness on IG Let's Connect: Karena Dawn — @karenadawn on IG THE BIG SILENCE PODCAST Join the #1 Fitness App for Women: Tone It Up App Tone It Up YouTube Tone It Up Instagram

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