Malaria, African sleeping sickness, and trichomoniasis are all examples of what type of pathogen?

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)

Answer charlie should immediately start an exercise and diet program because all his test indicate that he is extremely obese;