Loved by celebs such as Reese Witherspoon and James Corden (who dragged his mate Adele along), Plyojam fuses hip-hop dance moves with plyometrics (basically any exercise that involves jumping) to create a cardio class where you’ll sweat and smile. Co-founder Stacey Beaman told us, “PlyoJam is a sexy, fun and intense workout designed to shed massive calories. All routines are set to pop and hip-hop tunes you know and love.”