4 mins is just getting started! My nephew (funnily enough, also 7 at the time) was boasting that he can hold a plank for longer than his Dad while we were camping last year. I asked him how long he managed and he said 10 mins.
I bet him 50p that he wouldn’t manage 10 mins…..and he only bloody did it! He was pretty wobbly towards the end but it seemed churlish to call him out on his form….!
I didn’t realise but when he finished, he snuck back to his tent and was in tears because it hurt so much! He’s a stubborn sod…! Endeed up giving him 60p I was so impressed.
I reckon I can do about 3 mins if I really had to…..