If it makes you feel better, each hour you spend exercising extends your life by around 3.5 hours (net 2.5 after the hour you spent) Doesn't that math make you

If it makes you feel better, each hour you spend exercising extends your life by around 3.5 hours (net 2.5 after the hour you spent) Doesn't that math make you immortal? Exercise an hour, rest for 2.5, repeat forever ... (you also have to sleep, so exercise for 3 hours, sleep next 7.5).