<human>: Can you succinctly summarize the text in 1-3 sentences?

So it all starts out on Friday, I decide to start going to the gym again after about a year and on Friday its biceps/triceps and abs day. So i do my whole session and the following night my arms are really sore but i just brushed it off as muscle pain. The next day (Saturday) i can barely move my arms and I'm walking around with two imaginary watermelons under my arms, little did i know they were actually completely swollen. Not knowing the day after (Sunday) I go to the gym again and start of with legs, then shoulders. Was pretty intense and was feeling sick doing my last set of shoulder exercises so i stopped and went home. In the afternoon i started peeing brown and was getting pretty scared, after doing some searches found out that I most likely had something called Rhabdomyolysis (rhabdo) which happens when you have the mindset of pushing yourself hard but you're body isn't ready (like mine). And its basically muscle tissue ending up in your blood stream and can cause kidney failure, and death, which isn't cool. So i guess moral of the story, if your want to start working out again, ease into it, but apparently you get rhabdo when its light weight and lots of reps, so maybe try doing running, rowing, before hitting the barbels! I'm out for a week or two now after only getting back and doing two sessions :(.
<bot>: Went ham at the gym after a long break, got muscle tissue in the blood stream causing brown pee, probs out for two weeks now after only two gym sessions and very sore!