Martin's goal is to increase his arm strength. Look at these entries in his workout log and determine which principle of training he is most likely trying to avoid during his workouts.
Monday
Bicep curls 3 reps @ 15 lbs, 20 push-ups
Tuesday
Kettle bell swings 5 reps @ 15 lbs, 90 second plank
Wednesday
Yoga class
Thursday
Sit-ups 50, 20 push-ups
Friday
Bicep curls 6 reps @15 lbs, 90 second plank
Saturday
30-minute easy run
Sunday
Rest
Intensity
Tedium
Reversibility
Progression