Pitcher Offseason Workouts(Desperate)

You must be really skinny. 6'2 and only 155?
There must be a million posts about velocity. Just search it (find- green button on top of your post)and you'll get many results. Long Toss is usually the #1 answer.

Squats, weighted ball programs, cleans are all other things commonly mentioned.

yeah i'm on the thin side, i got a pretty good arm though(75-78mph) i've heard if i put some meat on my bones i'll throw harder

Do ALOT of squats,lunges,leg extensions,quad curls,hamstring curls.

If you do those properly and you are pushing off the mound like you are supposed to,you will be a horse!

Now, I also have been lifting weights to get bigger(biceps,pectorials) I've heard that if you become muscle bound you'll loose velocity, i want to lif weight and get bigger but i also dont want to loose velocity? Any advice

If you only workout chest and biceps, then yes, you will lose velocity. Take the time to learn how to squat and deadlift properly. Learning the olympic lifts and their derivatives would also be a major plus. The most important thing you can do though is eat 6+ meals a day and get 8 hours of sleep.

No, I work out my legs and stuff too, but I also want to be muscular, is their something you can do to gain muscle in your biceps and pecs but not loose velocity?

You're 6-2 155, I wouldn't worry about getting so big that you'll lose velocity. At that size I would say you most likely have skinny legs. I know you want to look good at the beach, but don't forget the legs are one of the most important parts of the body in baseball. You need them to run, throw, hit, etc. You can still lift upperbody and look good, but make sure you don't neglect the rest of your body.

If your still really concerned about beach muscles, but you want a carryover to the field, go with pull-ups, deadlifts, cleans, you can research the rest.