[Senip]

Originally Posted by EnR

I want to be around 140-150lbs come summertime. I'd like to have some muscle definition though. I don't just want to lose weight, I want to also tone. So I should do more reps and lower weights, correct?

I have 30 weeks before July. So if I lose 1lb a week then I'd reach my goal, but considering I'd also be gaining muscle weight during the process I can't really go by that.

No, that's bro science. Just follow the p90x, you'll get results. Don't overthink it or you'll go the route of others. Once you get lean, the exercise you've done will make the muscles pop out and give you the definition you want.