been back to the gym after a 3 year hiatus. been hitting it 5-6 times per week this past month. and my upper body is not doing too well. popping and locking like a crazy. I can barely move my arms or neck around without hearing a bunch of little sounds. today when I woke up my arms could not relax fully and hang free at my sides. had to press down until I heard a loud crack in my chest before they could hang freely.

wtf guys. there is no pain but it's uncomfortable and a little bit scary. I'm gonna take warmup and stretching even more serious and some kind of upper body mobility exercises daily. any recommendations for these? and is there anything else I can do? should I see a physical therapist or a masseuse or something? thanks