Abs in 1, 2, 3…
‘Be progressive with it: do 30 seconds the first week and add 10 or 20 seconds each week. I hold mine for a minute and a half.’
‘Holding the plank, jump your feet out slightly wider and then back in. Then jump the knees into the chest and back out. Repeat.’
‘Lie on your back in a starjump position on the ground. Bring your right hand to your left foot and then back down. Repeat, left hand to right foot. Keep your legs straight when you raise.’
‘Hold the plank and take one hand and the opposite foot off the ground. Swap over.’ 10-12 reps of each, taking a 10-second rest between each exercise. Repeat the whole circuit three times.