Historical clue formulations

• 1990s exercise fad — 2026-09-13
• Fitness fad popularized by Billy Blanks — 2026-07-08
• Workout program that's a portmanteau of two different sports — 2026-06-24
• Workout inspired by martial arts — 2026-02-17
• Cardio exercise program — 2025-05-22
• Kickin' cardio option — 2025-03-13
• 1990s fitness craze — 2024-06-30
• 1990s workout fad — 2024-01-07
• Karate-like exercise program — 2023-05-23
• 1990s fitness fad using karate moves — 2022-11-14
• 1990s fitness fad — 2022-11-06
• Exercise program since the 1990s — 2021-08-08
• 1990s fitness fad — 2021-05-04
• '90s exercise fad — 2020-11-28
• Martial arts-based workout — 2020-11-01
• Fitness program popularized in the 1990s — 2019-09-02
• Program on a Billy Blanks DVD — 2019-06-15
• Cardio workout regimen — 2016-09-06
• 1990s fitness fad with infomercials — 2016-08-29
• Cardio option — 2016-04-01
• Fitness program popularized in the 1990s — 2016-01-12
• Program with a "Get Ripped" version — 2015-12-26
• Exercise with a portmanteau name — 2015-06-11
• Karate-based exercise system — 2015-05-04
• Exercise option — 2015-02-19
• Former faddish exercise regimen — 2014-03-30
• Billy Blanks fitness system — 2013-01-02
• Once-faddish aerobics regimen — 2012-11-02
• Cardio workout option — 2011-12-10
• Judo-like exercises — 2011-06-26
• Formerly much-ballyhooed fitness program — 2011-04-13
• Much-advertised exercise program — 2011-02-09
• Cardio option — 2010-04-23
• Modern workout system — 2009-03-30
• Regimen with "cardio bursts" — 2009-01-10
• Karate-like exercises — 2008-06-08
• Aerobics technique — 2008-02-17
• Popular aerobic program — 2007-07-17
• Modern workout system — 2007-02-18
• Cardio choice — 2007-01-19
• Popular exercise system — 2006-09-05
• Popular exercise system — 2006-03-22
• Modern workout system — 2004-05-06
• Modern workout system — 2003-07-27
• Vigorous exercise system — 2002-12-13
• Exercise based on karate — 2002-02-24