What are the main reasons why excess weight affects physical fitness?

1.the heart has to pump harder.
2. it is more difficult to exercise.
3. the person sweats more.
4. the person does not see results from the exercise.
5. a heavy person gets more tired during exercise.

i think it is non rem sleep

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west