Good stuff Guys. Ben-
Working basic tumbling is great for an active rest day. You can tinker some elements of the planch by forking HS-forward roll progressions. Should we move this to the Gymnastics section instead of the Mass gain section?
If mass gain is an objective/concern Coach Sommer has mentioned the standard gig of reps in the 6-12 range, short rest periods being the goods/problem depending upon ones perspective. Mountains of sets (20-30) in the 1-3 rep range can also produce some mass gain.
"Survival will be neither to the strongest of the species, nor to the most intelligent, but to those most adaptable to change."