Will Reta decrease running performance?

[u/Traditional-Yam6959]

Hi, I’m a 20F looking to lose about 5 kg using retatrutide. I’m a long-distance runner and have completed multiple marathons, so running is a big part of my life, but I’m aiming to lean out slightly.

I took my first injection about a week ago and have already noticed a drop in my running performance, especially a slower pace. From what I understand, this can happen due to factors like increased heart rate, reduced calorie intake, and lower glycogen stores.

My question is whether this is just temporary while I’m on the medication, or if it could have longer-term effects. Once I stop retatrutide after a few months, is it likely that my performance will return to baseline or even improve, or could this dip in performance carry over?

Would really appreciate hearing from anyone with experience or insight on this.

[u/Traditional-Yam6959]

Yes but isn’t it dangerous to do keto on Reta because of the possibility of ketoacidosis…

[u/Thee_PRIDE → u/Traditional-Yam6959]

Don’t fucking do keto on Reta. Fat is incredibly slow in digestion and with Reta already slowing your stomach down extensively, you will be able to eat much less than you normally would considering Reta already and turn into a slug. Low carb is ridiculous for a runner.

[u/gigantor21260 → u/Thee_PRIDE]

ultra runner Zack Bitter would disagree with you...

https://zachbitter.com/zach-bitter-low-carb

You clearly have NO experience with this and simply like to repeat nonsense you've heard as if it were factual information.

[u/Thee_PRIDE → u/gigantor21260]

Yes, I'm a sprinter? Of course my experience with low carbs is not going to be optimal?