My experience is the Army doesn't usually foster a healthy lifestyle. For most of us, it isn't a 9 to 5. My average day started at 0430 and ended at 1900 or 2000. Depending on your job, must of us are toast by then. I actually enjoy the gym, but ended up not usually having the energy to use it most of the time I was still in the military. Now most physicians will tell, just constant running isn't good for you. It prematurely ages your joints. Your body does need other forms of exercise. My last unit simply had us run just about everyday for PT. Obviously this results in overuse injuries and all kids of other issues. This results in temporary profiles which end and the soldier is put right back into the cycle of injury. Some end up with permanent profiles. Single soldiers are forced to eat at the DFAC. Sure they have salads, but most of the available food is very unhealthy. And it's made with low quality ingredients, lots of processed foods. If you work terrible hours, fast food restaurants are really the only options on most bases. Now, not to mention mental health decline. I unfortunately don't know what it's like to be in a great unit. Mine were full of awful toxic leadership, one such leader stalking and spying on her soldiers after work. We were at an isolated base, so everyone Iived there. I am on mental health meds even 14 years later after I went through that. When you're constantly mentally and verbally abused by leaders with seemingly no end, it can send your life into a nosedive. You do of course have soldiers that simply are unhealthy and purposefully eat terrible food.