I am simply nonplussed by your response, in so many ways. Way to not answer the question, and attempt a fallacious diversion in the process, more of a red herring than an actual ad hominem in my opinion. I've congratulated him on his progress. I've encouraged him to keep pushing, keep sweating and to not give into frustration. Otherwise, I've simply been working to dispel the nonsense you utter here. Oddly, I've not seen him making "excuses." On the contrary, he has been mentioning his success. Ten mile walks, even on flat ground, if you leap right into it, can cause a number of overuse injuries, from shin splints and even runner's knee, to bursitis and tendinitis. Any physical trainer who tells you otherwise is not competent. All of those injuries I mention, if serious enough, require down time to heal, which is counterproductive. Age has exactly zero to do with it. More blame and guilt shifting. In other words, more fallaciousness. Or it could be they are just sick of your nonsense. Seriously, though, fitness can be a challenging thing, and needs to be part of a lifestyle change, something I have also mentioned here. If it and diet aren't seen as a change in lifestyle, they will likely not be successful. See above. Actually, no. the emphasis is on both words. If it were just about overload, one could go to the gym and just keep slapping plates on the bar and go at it. Endurance athletes could get in shape for a 5K one day, and be ready for a marathon in short order. "Progression" is the key to success. In running, for example, most coaches and trainers of non-elite runners will say to increase weekly mileage by no more than 10% as a rule of thumb. Elite runners typically cycle their mileage based on the season, their race plans and more, but typically don't make huge jumps in weekly mileage either. Weightlifters, to my knowledge, since I have a bit less experience in that area typically base their training on their one rep max for a particular exercise, and, depending on what program they are using, base their workouts on percentages of that max. They don't figure out what their max is, and then go beyond it daily for training purposes, but only to modify their workouts as they progress.