I recently turned 36, and don't get me wrong - I adore my thirties, but tipping the scales closer to forty, I looked over my soft curves with an extra portion of arse, and thought - It's now or never. My twenties were a ball of confusion, random sex, and insecurities, so I wouldn't want them back for love or money, but, I was a great deal slimmer.
Alcohol is ubiquitous at this time of year. Abstinence may make you feel virtuous but can also be dull. If you do drink, I'd advocate men avoiding beer. Beer increases levels of an enzyme called aromatase. This converts testosterone into oestrogen and leads to fat deposition around the pectoral - the dreaded man boobs. Stick to a few glasses of good quality red wine instead.