Former *NSYNC member Lance Bass taught his 3-year-old son Alexander the iconic 'Bye, Bye, Bye' dance in honor of the song's 25th anniversary. He shared the dance clip on Instagram on Jan. 17.

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"Class moves quickly, and can be challenging, since you’ll utilize muscles you never knew you had," says DiGiorgio. "But you’ll get the hang of it after three or four classes, and you'll ...