Quick question: if you haven't heard of the 12-3-30 workout, then where have you been? The workout - which went viral on TikTok after being coined by content creator Lauren Giraldo - shot to fame earlier last year and currently has 2.8 million likes and 12.8 million views.
When it popped up on my feed, I was intrigued. The routine looked simple enough and involved walking on a treadmill at the gym for 30 minutes. I'm normally sceptical when it comes to celebrity workouts or online trends - I'd rather try routines or sweat sessions recommended by qualified professionals - but was keen to give this one a go.
