Bizzy Bone in 2009 (left) and this summer
Crollalanza/REX USA; C Flanigan/Wireimage
Bryon McCane is now sporting a slimmer frame better suited for keeping up with his lightning-fast lyrics.
Down to a "crisp 165 lbs.," the rapper – also known as Bizzy Bone, of Bone Thugs-n-Harmony – credits his 30 lb.-weight loss to giving up alcohol, cutting out fast food and keeping his stress in check.
"I was drinking more than I should, so I said, 'Let's put the bottle down, period,' " McCane, 35, tells PEOPLE. "I got back to the basics, getting my health together."
After hitting his highest weight of nearly 200 lbs. seven months ago, McCane says he began "buckling down," cutting out hamburgers, fried food and late night pizza-and-soda binges.
"Now I eat because my body needs to be fueled," he says. "I still eat what I want to eat, but I stay away from the bread, potatoes and cheese."
The 5'11" rapper, whose autobiography Inside a Bizzy Mind is out this month, now aims for 200 sit-ups a day – with his ultimate goal to reach 1,000.
"I make sure I do my sit-ups and push-ups when I wake up and go to sleep," he says. "I'm constantly walking and being active."
Currently traveling with Bone Thugs-n-Harmony as part of the Rock the Bells hip-hop festival, McCane admits, "When I'm on stage, it's like going to Pilates. Afterward, my back doesn't hurt because I've been drinking, it hurts because I've been performing."
Other changes are even more noticeable.
"I can see my jaw line again. Holy smokes, I've got cheekbones!" exclaims McCane. "I finally think that I'm picture-worthy. I'm focusing on my six-pack now!"