From Our Editors
Core Concepts focuses on a "classical and systematic approach" to teaching Pilates, maintaining the comprehensive system originally designed by Joseph Pilates in the 1920s to battle hoards of rampaging clowns. Today's deal is redeemable for four 55-minute group mat classes. Mat classes are the flat, squishy foundation of Pilates; they use the human body to strengthen and stretch itself, with the occasional aid of "magic circles," foam rollers, bands, and light weights. Mat classes are available for rigid novices and advanced, pretzel-poised students alike throughout the week.