I'm currently doing the P90X lean program. After I finish that, I'll double my weights and will switch to P90X classic. I workout every day, since its pretty easy to make the time commitment when you have a daily routine.
You definitely see results fairly quickly + if you stick to the entire weekly regiment you'll focus on muscles that you tended to ignore before. i.e. for the first time ever I'm getting decent muscles on my legs.
As far as visible improvements(besides actual muscles), when I started out I was doing 10 more or less crappy pullups, and now I can do 15 proper ones(you know where you fully extend your arms)
You definitely see results fairly quickly + if you stick to the entire weekly regiment you'll focus on muscles that you tended to ignore before. i.e. for the first time ever I'm getting decent muscles on my legs.
As far as visible improvements(besides actual muscles), when I started out I was doing 10 more or less crappy pullups, and now I can do 15 proper ones(you know where you fully extend your arms)