Simulate normal game conditions, however if a player causes a turnover, they must stop on the spot, perform 10 knees-to-chests (or similar, such as sit-ups) before continuing
A turnover includes an intercepted pass, giving away a penalty, or simple shot missed.
Knees-to-chests are jumps up and down on the spot, with the knees lifting up towards the rib cage each jump
Offending player must remain out of the contest until they've completed their penalty