At my gym theres a bench machine that allows you to bench without a spotter. It has hooks so you twist the bar out and it unhooks so it moves freely, and then twist the hooks back when you're done. It allows perfect form and I think the bar is on rollers or a pully system. 2 months ago I could only bench 135 lbs (16 years old and i'm 120 pounds), but on this machine I could rep 125 lbs 10 times, and this was after I got done with my chest and back routine. Is this machine helping me? Or did I actually add alot to my max?