In 2005, most people looking for home fitness were snapping up DVDs from celebrity trainers like Jillian Michaels or programs like P90X. A turning point came with the launch of YouTube that year, heralding the arrival of the online fitness trainer.

Instagram soon followed, turning trainers into influencers, while apps like MyFitnessPal and Sweat helped them scale their services. Peloton’s 2013 debut brought slick, connected workouts into the mainstream. But it was the COVID-19 pandemic that really pushed the profession into overdrive, as trainers pivoted to livestreams, Zoom sessions, and on-demand coaching.

Liked this? Click the Like button above. And click the Follow button above for more great stories from loveMONEY

Now discover the luxury collectibles the super-rich are snapping up

From crypto trader to influencer: lucrative jobs that didn't exist 20 years ago