High-Intensity Interval training is the top fitness trend in the U.S. according to the annual survey conducted by the Am
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English Year 2015
Table of contents :
01. HIIT basics --
02. Pre- and post-workout stretches --
03. Introductory HIIT routines --
04. Hardcore HIIT routines --
05. HIIT programs --
06. Cardio exercises --
07. Upper body exercises --
08. Core exercises --
09. Lower body exercises.