Malnutrition (Generally)
Beriberi (lack of vit B)
Scurvy (lack of vit C)
Crohn's Disease (A cause of mal-absorption)
There is not enough information to determine whether this plan is good or not. Verified data of results of the actual users should be shown to show that the fitness plan actually works. Without verified data, there is no evidence to show that the friend will loose weight and/or benefit from the plan.
Intrinsic. Intrinsic is defined as <span>belonging to the </span>essential<span> nature or </span>constitution<span> of a thing, which would imply that Tyrell loves jogging. </span>