One physical health challenge that I have recently taken on is to walk 10,000 steps every day. This may sound like a lot, but it's actually not as difficult as it seems. I simply make sure to take a walk every chance I get, and I soon reach my goal.Walking is a great form of exercise, and by taking on this challenge, I am not only improving my physical health, but also my mental wellbeing. I highly recommend giving it a try!