Cardio and bodyweight exercises only

[rookrook89]

Is it necessary to lift weights? I'm 245, 6'4, trying to get down to 190 or so.. as long as I cut enough calories and do my cardio do I really need to lift weights?

[andezman]

Yea.. You do.. It helps build muscle which hps your metabolism... Which burns more calories, which helps control weight.. With the exception of hiit the calorie burning from cardio is gone when you're done

[rookrook89]

Yea.. You do.. It helps build muscle which hps your metabolism... Which burns more calories, which helps control weight.. With the exception of hiit the calorie burning from cardio is gone when you're done

I was thinking about trying the bizzy diet 21 day program just to start off with.. what do you think of it?