Keiji is a follower of the shinto religion which of these would most likely be part of his religious practice?

What are "these"?

Anyway, many Shinto people have harsh practices. Most of the time, as a warmup you would hang from a rope by your head and balance for 2 hours. Then, punch stacks of paper against a brick wall for 2 hours, head bang into a bag for 2 hours, and be on a headstand for 2 hours. Everyday, for 2 years.