So, the second exercise we're going to do here in the upper body circuit is going to be a chest exercise. I like to keep the exercises compound lifts, because we're only going to be doing one exercise for each body part so, you want to make sure it counts. There's a couple of different things you can do here. I'm going to show you the barbell bench press first. Now, here you just want to make sure to flex that back, so you have a nice base. You don't really want to over exaggerate with the elbows, just lower it down to the lower chest and press right back up smoothly. This is going to be using your chest, your front of your shoulders and your triceps. And, I probably go for about eight to twelve repetitions of those. Another option you have is to do your dumbbell presses for your chest on the physio ball here, and that's going to involve more core work, so if you're not familiar with the gym too much, or if you just want to work more on your balance and coordination, then this might be a good one for you. Now, you're just going to come down, you're going to want to make sure the ball is right in between your upper back, you want to make sure you have a nice bridge going so your body's nice and straight here, you're not coming down, up, or too far up here. And, you're just going to press right up, and you're going to notice that it's going to be a little bit harder to do. So, you're going to want to go lighter in weights. You might even want to use slightly higher repetitions, the twelve to twenty range. And, this is definitely a good one.