At 66 I've Just started the NHS C25K, after being encouraged and inspired by my friend (Chadders) who has been on the plan for a few months now. Have just finished the second week of the running and have not found it too bad. In fact I look forward to the runs now. My weight was about 11.5 stone 8 months ago, am now 9.6 with a bmi of 21 (5'6" height). I now do yoga and have recently started exercising with hand weights. I now follow a healthy diet (most of the time) and feel better than I did when I was in my forties! Just wish I'd started earlier. Happy running to you all!