4. Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Net sales	$ 300,549	$ 169,363	$ 496,497	$ 351,274
Live events [Member]
Net sales	82,524	169,363	112,901	351,274
Gym [Member]
Net sales	$ 218,025	$ 0	$ 383,596	$ 0