Are there any negative effects to running stairs, (not climbin
slowly but actually running) as a form of excercise. now with the
haze it’s very bad to go out n run or jog so now im trying to run
like 25 storeys per day (up only not up and down). will it damage
the knees or cause strain in the legs or cause any problem when i
grow older? or will it restrict growth or something
