(Rating changes in comparison to 2019) Fitness trends based on results of an annual survey conducted by ACSM’s Health & Fitness Journal® (Worldwide Survey of Fitness Trends for 2020 By Thompson, Walter R. Ph.D., FACSM (ACSM'S Health & Fitness Journal: 11/12 2019 - Volume 23 - Issue 6 - p 10-18 ) ) ↕0  1.  Wearable technology ↑1    2.  High-intensity interval training >> ↓1    3.  Group training ↕0  4.  Training with free weights New ↑3    5. Personal training ...