Emma has been juggling a busy schedule between work and marathon training. She questions whether she should take a day off from training to rest her body. Which sleep theory would suggest she should rest?

protection, energy restoration

Explanation:

Protection, energy restoration sleep theory -

Sleeping is the process in the life of an organism, where the person or the living creature, tends to relax the mind and body together and restore the energy for the upcoming day.

Sleeping is an important and necessary activity of the organism, and lack of sleep can lead to many problems in the day to day activities.

Hence, from the given scenario of the question,

Emma need to rest and sleep, in order to restore and protect her energy.