https://www.acsm.org/read-research/trending-topics-resource-pages/acsm-fitness-trends
The COVID-19 pandemic certainly made an impact on the 2021 survey. The new #1 trend for 2021 is online training which was #26 for 2020.
Below you will find additional ACSM resources for the 2021 Top 10 Fitness Trends.
Read the 2021 Fitness Trends Article