You are also more likely to succeed if you borrow an idea from the bodybuilding community. Have planned cheat meals (if deserved) every five-seven days and you are far likelier to succeed in the long term.

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.

Embarking on the obligatory New Year detox after a boozy festive season? Don't bother - the January detox hype will make no difference to your health,...