def GET_RIPPED(what, how_long, equipment, who=None):
# first filter by equipment
if equipment == False:
exercises = Exercise.exercises_without_equipment(Exercise.all)
else:
exercises = Exercise.all
# then filter by person
if who != None:
exercises = who.acceptable_exercises(exercises)
# finally, filter by muscle group
yes = []
for group in what:
yes += group.musclegroup_exercises(exercises)
# start creating workout!!!
workout = Exercise.populate_workout(how_long, exercises)
# getting output...
return Exercise.gimme_gains(workout)
