One of my big, big problem areas is the back of my arms aka my triceps. I guess I have never really paid enough attention to them, I blame it on out of sight, out of mind :D But then i'll see a picture of my back or catch a glimpse of my backside in a double mirror and realize I need to put some major work into that area. Half of the problem is I need to lose fat from my arms, I tend to store extra weight there. When I was pregnant and gained 50lbs, my arms were huge, in most of my pregnancy pics they make me look even larger than I actually was.
Aside from losing body fat though, I also need to work on building some muscle in my arms. They are too weak for my liking and have very little tone :/ The bodyweight move I use the most for my arms is the ever popular push-up which is one of the best exercises ever buttt. . . they don't target my triceps enough. You can modify the push-up to work your triceps more by narrowing your arm stance and/or you can do tricep dips which I'm going to talk about and demonstrate here.
First here's my video which demonstrates dips with feet on the floor and then dips with feet supported by a chair:
Song~ Club Can't Handle Me by Flo Rida w/ David Guetta (Kinda cheesy, but I Love It!)
You can modify these in numerous ways to make the easier/harder. In my first example I had my legs straight out with no bend. If you want to make them easier you can bring your feet closer in with a bend at the knee. You can make them harder by putting your feet up on a chair as I did in my second example. If you want even more challenging you can support your feet with a stability ball.
Tip: In researching I learned that you should keep your back close to the chair throughout the movement.
Try for 3 sets of 10-12 a few times a week, if it starts getting easy move up to a more challenging variation. If you know of other effective tricep moves I'd love to here about them!
You can see the first three bikini body moves here:
#1~ Jumping Lunges
#2~ The Plank
#3~ Bodyweight Squats