I need to lose weight and get fit! Just started C25K but can only jog for 30 seconds at a time! And then I fast walk for the rest of the "run time" I'm on week one and would love any tips for someone with OA in knees, and not a lot of cartilage left. Also running gear! What's the best running knickers and leggings or tights. I have a very sore running injury 😳 Ouch! Need better anti chafe gear.