While underwater, they are tasked with staying calm and pulling off athletic feats like grabbing weights and walking across the bottom of the pool.

Other workouts in the video show the 39-year-old Oscar winner walking underwater, handling weights, and crawling along the pool’s floor using the dumbbells as her anchors.

ABOVE WATER, underwater hockey looked like roiling chaos in the pool, with jets of water shooting out of snorkels and people kicking each other with long fins.