4. Revenue (Details) - USD ($)	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Net sales	$ 596,735	$ 346,688
Live events [Member]
Net sales	487,229	346,688
Gym [Member]
Net sales	$ 109,506	$ 0

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details