Arms: This is pretty obvious when it comes to dumbbells. You probably know what to do. Bicep curls, Arm hangs, tricep curls...if you have further questions, try googling! Here is a site with some basics --> [Link](Mouse over link to see full location)
Abs: Try doing situps holding your arms straight above your head holding weights. These will get you KILLER abs! Remember, if you want really defined muscles, work until exhaustion. Instead of doing many sets in a lower weight, beef up the weight to the point where you can only do 8-10 reps comfortably. Another exercise for your core- Try bicycles (on your back pumping your legs) and alternate bringing the dumbbell up to each knee. This is a good workout without the weights, but with it, it will make it that much harder. One last core exercise, V-SITS. Okay, these can be pretty killer at the beginning, but worth it in the end! Here is a vid to help you with those v-sits [Link](Mouse over link to see full location) (I know it's a girl in the video, but I promise, toned abs are hot on anyone! :P)
Legs: Okay, here is the hard part. Dumbbells aren't going to do much. BUT they can certainly do some!First, get in a squat position with both hands on the dumbbell. Make sure when you hold the weight that it is vertical, with your hands making C's facing each other. Now, bring that puppy all the way over your head to be behind your back, still vertical like your spine. Now, do your squats just like normal. Feel the burn!
Another leg exercise- do lunges (alternating with each leg in front) with weights in both hands down at your sides. Lastly, try to run a bit outside. I know this isn't very fun, but it will strengthen your legs and also serve as a good cardio workout!
Parting words: There is tons you can do at home. Pushups are by far the greatest exercise known to man. They literally work almost every muscle in your body. Follow the 100 pushups program for great arms, abs, and booty! [Link](Mouse over link to see full location)
Also, you might want to invest in a pullup bar for your door. Not too expensive and they are LOADS of fun to show off with :P
Good luck on your workouts! Lemme know if you have more questions!
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