Men need their beauty sleep too. A lack of deep sleep in men has been linked to love handles.
Men lose the ability to fall into REM sleep as they age.
As a result, less growth hormone is produced and the weight comes on. Lack of high-quality sleep may be linked to men's flab. Van Cauter, E., et al. Age-related changes in slow wave sleep and REM sleep and relationship with growth hormone and cortisol levels in healthy men.