sagi definitely motivated me.re really filling out. it's totally changed my whole life and gave me a much more positive attitude. >> announcer: the secret proven to change your body at home in just 90 days is sagi's trademark dynamic set training, a unique nonstop combination of sets, reps, resistance, and recovery. this powerful training system is proven to accelerate extreme fat-burning and explode head-turning muscle definition. >> dynamic set training works. it worked for me. it worked for hundreds of my clients. and now it will work for you. let's show them what progressive set is all about. we're gonna start with a lighter weight. go to 15 reps to pre-fatigue your muscles. after 15 reps, we're gonna go down to 12 reps, as we go into the heavier weight. adding more weight accelerates growth. after 12 reps, go down to 8 reps. we're gonna go to the heaviest weight. remember, there's no rest. this pace will really fire up your metabolism. drop the weights, sean. we got 90 seconds' rest, guys. wipe your sweat and

sagi definitely motivated me.. we got 90 seconds' rest, guys. wipe your sweat and start again. now we go in reverse. we're gonna start with the heaviest weight -- 8 reps. the more you push your muscles when they're already fatigued, the better the results. no rest. go to the medium weight, and we're gonna do 12 reps. this will keep your muscles fired up and closer to fatigued. all right, from here, we're going to 15 reps. that's gonna be a lighter weight, and now you should feel the pump. you get this set right, and you have no choice but getting huge. >> body beast and the dynamic set training is just amazing. it really takes all of the guesswork out of working out. if you follow the program, step by step, it works. >> a lot of times, women say "i want a shape." well, if you want a shape, you need a muscle there. that's what body beast does. you start with the weights that work for you. >> what i love about body beast is the different sets and different reps and drop sets combo sets, giant sets. those things real