How do enzymes in your body make chemical reactions occur at safe temperatures?

They can ensure that chemical reactions occur in safe temperature by only speeding up the reaction in optimum temperate range.
If the temperature is too low, the enzymes may be inactive, and the chemical reactions may be slow.
If the temperature is too high, the enzyme would be denatured and it can no longer function as a biological catalysts.

yes since he is taller that does play a factor into it but his father is also probably stronger therefore he can bounce the ball higher up than mark