I was reading an article the other day about different exercises for different muscle groups. The article indicated that push ups are good for the chest, tricep and bicep muscles. I can see the first two, but are the push ups really good for the bicep? The reason I ask is I do lots of push ups and bicep curls. If the push ups are good for bicep development can I just forget the bicep curls? Keep in mind I am no body builder, just an over 65 guy who is trying to stay in shape a little bit.