Your new year fitness detox doesn’t have to cost the earth, either: swap that Mauritian yoga retreat for something closer to home to up your green points (and skip the jetlag). Fitness star Lucy Mecklenburgh’s Results Retreats combine lifting workouts, dance classes and mindset talks in the Essex countryside; No1 Boot Camp offers weights, spinning, boxing and hiking on the Norfolk coast; while Glass House Retreat combines Pilates, Boxercise, TRX and yoga in a luxe detox villa just an hour from London (resultswithlucy.com; no1bootcamp.com; glasshouseretreat.co.uk). This month’s break is Veganuary-themed to boost the eco credentials.