What are they teaching you at school?? I have one joint between my forearm and my bicep/tricep. This is called the elbow. interrior/exterrior, posterior/anterior. It is a joint, a single joint....
Fair enough. However I'm sure your gym is not empty. Meeting people and becoming a part of the gym is a good way to improve your progress and knowledge. People are usually more than willing to offer...
Chains and bands... they both allow the resistive forces in which we're working against to change (increase/decrease) throughout the ROM. It's not complex, its simple and it works.
By elbow flexor your speaking in terms of bicep contraction???? Because it is easier to perform a pullup with bicep compensation than to actually use your back muscles to lift yourself up.
Yes, You can also estimate on the time the earth has been around, or how it was created. You can estimate when my hair will turn grey or when it will fall out.