my part is on a self-assessment

I have to write the self -assessment. There is a powerpoint that my professor put up about what the self-assessment need to say

For our group, we are deciding that the independent variable is level of fitness in relation to reaction time. Basically, we want to see if the level of physical activity and how often someone exercises will influence an individuals reaction time. This will be researched in relation to central processing, endurance, and our DV which is reaction time!

Our hypothesis is still being composed, but will be something as follows:

The more days a week someone exercises will positively impact and increase reaction time; central processing, muscle flex, and endurance all contributing factors.

Possible confounding variables:

-type of physical activity

-gender

-age

-education

-socioeconomic status