It is very hard to find adequate exercises which will effectively tone your biceps and triceps and shape your arms nicely. If you are ready, then you can accept the challenge which has exactly what you need to target and get rid of the flab.
This is a fun one I did it today. Initially, my goal was to complete the circuit 4 times, but I was able to get 2 rounds in! Pretty good for someone who is coming off an injury that basically had me doing none of these cool moves for 3 weeks!