I'm 18, female, and just joined the Marines! OORAH! I can't wait to leave. (Parris Isl., SC in Jan.) Currently I hang for 80 sec., run a 24 min. 3 mile, and do 70 sit ups in 2 min. I'm working out to improve my... everything. (: I want a 300 PFT score so badly. I need 30 more sit ups, and to...