i put "300 workout" into google and i got the workout on mens health.com. I am glad there is a revised one because the original one is to crazy. Im 15 years old and very skinny. I know i can do the exercises on the list but the site calls for 150 reps. how many reps should i do for my age and body?>???
here is the exercise


15 bodyweight rows
25 bodyweight squats
15 pushups
50 jumping jacks
20 mountain climbers
10 close grip pushups
15 bodyweight rows

Well, 150 reps is the total of the all the exercises. So you are doing 150 total actions/movements.

For your age and size, this is actually a real good workout as it utilizes so many bodyweight exercises, as opposed to free weights etc. Michelangelo's David didn't get that way by going to Bally's!

As far as perhaps changing the number of reps, just try the routine scaled down, say...5 bodyweight rows, 10 bodyweight squats, etc. If that's easy enough, or rather not challenging enough, then go up till afterwards you can't walk for a few minutes! This is supposed to be an engaging workout with no rest.

As always, be safe and don't do more than you can. As said above, start easy and work to your ideal rep amount.

(Note: This is acually a great workout for anybody!)

Can you recommend some courses for building six pack abs?

I'm a novice muscle builder and want to find as much info as I can.