i love my mtb but i crash on it way more than my mxr. after a good bicycle ride, i like to ride around popping wheelies.....im 40. good news here. i started at 191 and weighed in at 182 this morning. this afternoon i decided to run for time in a mile. i didnt think i could break 8:00 but i did with a 7:41!! ill keep up the workouts and do it again in a month. yesterday, i talked my wife into going jogging with me. she plays 30+ womens soccer and has been doing a little jogging in preparation for her upcoming spring season. she usually goes out on 20-30 min runs. she has never gone more than 2-3miles. i talked her into doing 5miles with me. it was tough as she told me "this is not fun" more than once. we were on an out and back route and i thought about telling her to wait and i would run back and come back for her with a vehicle. she soldiered on and with 1.5miles to go she got a second wind and made it no problem. she told me that she would of never thought of even trying it. i am always amazed at how the human body can do more than what we give it credit for. if you are trying to get in better shape for performance, looks, health ect., keep doing it and your body will do as much as you let it.