r/exercisescience

I swear that my arms just physically, like structurally, are not foldable while holding a barbell. Bench/incline/overhead press is simply not possible with a barbell, no matter the weight, I don’t think I could press a pvc pipe. With dumbbells there’s no problem, then I can do them.

My arms are exceptionally long. I can’t explain why this makes barbell presses impossible but I can feel that it’s not as I’m trying to go through the motion. It’s as if the angles that a barbell forces are a mathematical impossibility with my arm measurement. Am I crazy?

This is honestly one of the hardest things in the space. There are so many peptide suppliers especially one of the ones outside of the USA. It is difficult to finds ones batch COA certified or any with over 99% purity. I want my stuff to come from the USA also because of shipping times. Trusting the supplier feels just as important as choosing the right peptide. What actually gives you confidence in the brand, consistent quality, clear information?

What “natural” supplement has made the biggest difference to your exercise performance and at what dosage? I’ll go first; 20g glycerol pre workout will change the game for pumps in the gym

Hi everyone!

I'm a graduate marketing student conducting research on Planet Fitness for a class project. I'm looking for people who are familiar with or have been members of Planet Fitness to complete a short anonymous survey.

The survey takes about 3–5 minutes, and all responses will only be used for academic research.

I really appreciate your time and support.

Survey Link

Every time someone asks "what's the best peptide company?" in a forum or group, you get a bunch of different answers that don't even seem to be judging the same thing.

One person swears by a supplier because the prices are cheap, another one won't touch that same company because they don't post third-party test results, someone else only cares if support actually replies when something goes wrong, and then there's always that one guy who just says "I've used them for two years, never had an issue" like that settles it.

Makes me wonder if half these recommendation threads are even useful, since nobody's a comparing the same stuff.

So I'm curious, if you had to make an actual checklist for vetting these companies, what would be on it? Like what really tells you a supplier is legit versus one that just looks legit?

Hello there. I was wondering if there are any sports-scientists, physiologists etc. here, who can recommend books on Bio-Mechanics, Endurance-Sports and/or Sports Nutrition. i would love to educate myself more in what i love doing.

Most of us know mental training matters in running. What's less

discussed is that generic mental training — visualization of

finish lines, breathing exercises, positive self-talk — probably

isn't addressing the right thing for your specific situation.

A 2024 study from the Hungarian University of Sports Science

(Frontiers in Sports and Active Living) looked at mental preparation

in competitive distance runners and found significant differences in

what mental skills actually translated to performance across different

race conditions.

Separately, brain endurance training (BET) research shows that

mental fatigue manifests physically — and that it does so differently

depending on your specific technical weaknesses. A gait study on

marathon runners (Sports Medicine Open, 2025) tracked 23 runners

with IMUs through a full marathon and found that fatigue-induced

form breakdowns were highly individual — increased contact time,

lateral foot deviation, pelvic instability — happening at different

points and in different patterns per runner.

Which means: the right mental training for you depends on where

and how your form breaks down under fatigue. That's not something

a generic program can address.

Wrote a longer breakdown of the research here if anyone's

interested in going deeper:

https://blog.masteryhub.se/en/mental-training-for-runners

Happy to discuss the BET literature specifically — there's

interesting debate about transfer effects to real running conditions.

I began my fitness journey in late 2024 (around November i think) with nothing more than a skipping rope…..

Started with 100 skips/day…
and Increased to 500/day within about a week
Reached 1,000/day after a couple of months
Eventually switched to a 15-minute timer instead of counting a target…
Today I consistently complete 2,500–3,000 skips Ina 15 mins….

Since 6 months i am doing them under 250 breaths per the total session

At the start of **2025…**I made it a habit to do 50 bodyweight squats every day… till now and reached to a 20 kg squats 100 per day

I got 285 Skipps in a minute and i do 6 most Skipps ina single jump

Now i am addicted to skipping like a drug… if i didnt do that a single day i felt like something missing like…

I moved from the suburbs to a walkable city. I noticed people at my weight lifting gym at the city are more cut and thin while the people at my old gyms in the suburbs who lift about the same are all around thicker. I'm wondering if the extra steps you get throughout the day living in the city just makes people not as thick.