im a begginner weight lifter and ive been having some pain in my elbow when i benchpress. i was wondering what could be causing this pain. also i cannot lift that much or lift that long on the benchpress before my arms start hurting and i lock up and cant lift any more. could i be doing benchpress wrong or something? also when i benchpress i dont feel any strain or burn in my pecks all i feel it in is my arms. any advice on this could help thanks. also im 18 and i cant bench more than like 90 pounds for a workout, whats wrong with me why cant i lift much?