What everyone suggested is on point, mk is a great tool, building a proper base is paramount... why snap yourself up with these new found muscles if you truly aren't prepared? I'm 5 ft 9 inches tall at 253 pounds and have been lifting for the greater part of 33 years. My tendons are where they need to be strength wise. Someone with say 5 years under their belt who doesn't truly lift heavy weight, but rather challenging weight might hurt themselves with say a 100 pound bench increase. Rest is critical as well, at the moment I am taking it easy and don't go above 315 for 10. I'm letting my joints heal somewhat. I also picked up a jewel from EZ_E... 10 minutes in the dry sauna is a complete body saver. Thank you for that brother! Nice to walk outta the gym feeling like I'm 25 again versus 45.