I’ve piled on weight over the last 2 years, I’m the biggest I’ve ever been. I desperately need to lose at least 4 stone for my health and for myself, I can diet no problem but exercise is the main issue has I have plantar fasciitis in both feet and tendinitis in one foot. Which is worsened by impact, to the point I can hardly walk. Can anyone recommend any non weight bearing exercises that will burn enough calories for me to lose weight?