Designed as a pair, the FIRM Strength and FIRM Cardio cross train by varying the sequencing of exercises: FIRM Strength shapes muscle by first working the upper body, then the entire lower body, and FIRM Cardio burns fat using PHA (Peripheral Heart Action) training to work the upper and lower body alternately. PHA sequencing also strengthens the heart by repeatedly making it pump blood back and forth between distant muscle groups. When used on alternate days they sculpt your body by preventing muscles from adapting to predictable exercise sequences, and maximize aerobic endurance and fat burning.
Release Date: January 01, 1995
September 15, 1999
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April 06, 2020
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June 06, 1980
October 15, 2007
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July 18, 1988
October 23, 2018
May 16, 2006
April 13, 2006
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September 30, 1983
January 01, 1983
June 06, 2018
December 26, 2011