Don't let that stop you. look for a dip assist machine at your gym. start out there, and then when you can do 8 reps of body weight dips, then start piling on the plates. weighted dips are a killer exercise. don't make excuses, and don't be discouraged by your size/weight/whatever, you got to start somewhere
so, to reiterate what exercises have been listed:
weighted dips
tate presses
close grip bench
reverse grip bench
tricep extensions(and their variations...)
Don't let that stop you. look for a dip assist machine at your gym. start out there, and then when you can do 8 reps of body weight dips, then start piling on the plates. weighted dips are a killer exercise. don't make excuses, and don't be discouraged by your size/weight/whatever, you got to start somewhere
so, to reiterate what exercises have been listed:
weighted dips
tate presses
close grip bench
reverse grip bench
tricep extensions(and their variations...)
well, it is a dip/pull up assist machine. there is a weight stack on it, and in front of it(as you approach it), there is a platform that is attached to the machine that pivots. if it is vertical, that is the stowed position, if it is vertical, then it is in the assist position. when it is on the assist position, then you get on it(there will be steps on the side so you can swing your legs around and kneel on the platform), and then proceed with your pull up or dip sets.
on most machines in the gym, there will be instructions on or near the machine, so don't be afraid to look for them. they are there for a reason.
JM press? is that a close grip bench press where the negative is extremely slow and the concentric is an explosive upwards force? is that a mass builder?