Dude, I was doing cardio today walking on an incline, and i got a pressure like feeling pain in my chest on the right side (not the side of my heart). It felt like someone was pushing on my chest and also from the back. I havent been on any aas for over 5 weeks. I did finish up a 3 week cycle of clen though 2 weeks or so ago. ANy ideas on what this could be? Kinda scared me so I got off and the pain went awyas, b/c it started to increase a little. BTW< im in my early twenties.