Considering, according to 9 Oct 2016 Military Times article-And the fattest U.S. Military Service is ..., obesity is increasing and fitness is declining it will be interesting what physical/mental standards will be five years from now.
The rack and stack of being the most obese and fit service was Army #1, Air Force #2, Navy #3, USMC #4. According to article Navy was #3 only because it changed BMI and other standards to make it more difficult to fail weight and physical standards.
USMC was #6. The Navy was #s 3,4 and 5