Extremely mixed. Last year my mental health was probably at its lowest after realising how bad my health was (weight and muscle atrophy from becoming a hermit in COVID times). I did a lot of work and I was finally able to go on walks daily without being exhausted and that felt really good. This in turn gave me more energy in the day and that also felt really good.
Also started doing weights. That didn't feel as good. Making progress was nice but I was basically always in pain or aching, and when I wasn't, it meant it was time to work out again. After exercising and the muscles were popped, it felt really good but that subsides. And seeing muscles like that start bringing out the body dysmorphia badly. It was the best Ive ever looked and it made me feel awful. Then I injured myself and it got it was even worse.
Tl:Dr light cardio yes, weightlifting not really