Skip using a skipping rope 30 times in a minute.
Tie your shoelaces and untie them and count your tying and untying in 30 seconds.
Do 20 on-spot jogging, 5 sit-ups, 7 hops and sing a song without losing your breath.
Bark like a dog but walk like a gorilla at the same time.
Turn around 20 times and stand straight.
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