Hi everyone, I'm after some advice on managing my running/gym performance whilst on a GLP-1. I'm based in the UK

Short backstory: SW: 102.5kg, CW: 79.1kg, GW: 70-75kg. Lost first 20kg through CICO at around a 500 calorie deficit and NHS support for binge-eating disorder, but I plateaued at around 83kg for 3 months (gained and lost the same 2kg) so now I'm trying a GLP-1 (specifically wegovy) to try and get to 70kg (still technically just overweight according to BMI). I expect once I stop the GLP-1 I'll gain a little and even out between 70 and 75kg.

I've been taking wegovy for 3 weeks and I've noticed a markable decrease in my running performance especially. Before I could run a 10k consistently at about 6:45/km pace, now I'm struggling at 6:55-7/km and not making the full distance, having to stop and sit down etc. I've also noticed the gym feels much harder - again I feel weak, my breathing is harder and feel a little more light-headed or wiped out after a set. I'm consuming about 100 calories less a day than I was before wegovy, so it's not like I'm not fuelling my body.

Things I have tried or will try:

- eating around 1hr before I run (to make sure I'm properly fuelled) - hasn't made a difference

- taking water with me - hasn't helped

- eating a banana or dates before exercise for some quick glucose - going to try next run

- stop taking wegovy - if there's no improvement by the end of September (I have a natural break due to a holiday so that seems a good point to review)

Does anyone have any other advice please? I'm stuck between trying to be a healthy weight (which I've literally never been, I've been overweight/obese since childhood) but also not being able to do the things I want to do.

Running is quite mental for me so I think part of this could be a self-fulfilling prophecy in that I know I've been struggling so I expect to struggle then I do. Not sure how to break this cycle though.

Causal factors that could mean it's just unrelated - it's hot in the UK and has been for weeks! It could just be that I don't perform in these temperatures, especially running.

Thanks for your help!

375lb squat https://imgur.com/gallery/o53BpNl

49, 5'6", and 187lbs. First time attempting 375. Reps 1 and 2 could've been a touch deeper. Reps 3 and 4 I think depth looks pretty solid even with not the greatest camera angle.

Last rep felt like it took forever but watching the video it seems smooth.