Reps
Issue 40

Knowing If You're Growing

Issue 40: September 2025

This issue covers how gym performance progress may relate to hypertrophy, impact of volume on hypertrophy within individuals, effect of collagen on skin aging, effect of artificial sweeteners on weight, and impact of eccentric duration on strength and size.

REPS: Volume 4 - Issue 40

In this issue

5 Articles

56 min read

woman doing curls

Training Are Strength Gains Primarily Driven by Muscle Growth?

Training One Leg at a Time: A Within-Participant Look at Volume and Hypertrophy

collagen comparison

Supplementation Collagen Supplements for Skin Aging: Are There Any Benefits?

artificial sweeteners

Nutrition Do Non-Nutritive Sweeteners Impact Body Weight?

trainer timing reps

Training Does Eccentric Speed Impact Your Gains?

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