So in an effort to work on my terrible core strength I thought I'd try the plank challenge! I can do a minute (at a push) so have started with that rather than 20 seconds but literally after a minute I'm ready to collapse and in afew days I'm supposed to move up to 90 seconds and after 30 days it's FIVE MINUTES!
I'm just wondering has anyone successfully managed to do this?!!!!???
I do body combat and HIIT classes so am relatively fit from a cardio point of view but core strength it seems I have none! X