Classpass Payal Kadakia 2702Sarah JacobsClassPass just released data about the biggest fitness trends from around the US.

ClassPass is a monthly membership program that allows its users to take certain fitness classes at gyms and studios. It claims to have had 21 million class reservations and is partnered with 8,500 studios in 29 cities across the country.

Using data it generated, ClassPass was able to determine certain fitness trends — like Tuesday being the most popular day to work out and strength training being the most popular type of exercise.

It also measured regional trends, determining things like which city is the most adventurous and which travels the most.

Here are the results: