SAS, if you are fat it is for one of two reasons.
1. You shove more food into your cockholster than you burn off through physical activity.
2. You have a medical condition that is causing it.
#1 is correctable ONLY THROUGH EATING LESS AND EXERCISE MORE.
#2 makes you medically unfit to serve in the Armed Forces.
If it is not #2 then you need to grope around down there, find your sack and do what you need to do... no ****ing shortcuts. If all you want is shortcuts save us all some time and quit bothering the recruiter and go apply at Wendy's. If you join the military you'll just end up in a pine box because you're a lazy unmotivated pear shaped oxygen thief.
If it is #2 then you have my utmost sympathy and I wish you luck in whatever endeavour you end up in but it won't be the military.
"The purpose of fighting is to win. There is no possible victory in defense. The sword is more important than the shield and skill is more important than either. The final weapon is the brain. All else is supplemental." - John Steinbeck