TENminutes or longer if I really had to....NO joke all it takes is proper breathing exercises and isometric exercises...Try getting on the floor in the push up position...go down to the floor, push yourself back up and freeze right there. We call it locking out. Sure the first couple of times youll shake like a Bellydancer... but with commitment and time ...It will be quite easy. To be a good hunter ...you should be in half decent shape YOU NEVER KNOW WHEN , IN THE FIELD, YOUR LIFE MAY DEPEND ON IT!!!!!!!AND I shoot an old... MARTIN LYNX MAGNUM... not that high tech expensive stuff there is out there today..Technology will or has made us a bit lazy/laxed. I mean no disrespect here, Im just making sense out of the nonsense!!