The 3 Building Blocks of Fitness
By Natalie Gingrich Mackenzie, SELF Consider this your get-fit trifecta. All you need to tighten and tone is a smart combo of these three fitness fundamentals. BLOCK 1: CARDIO Pretty much any activity that gets your blood pumping is cardiovascular. When your heart rate rises, muscle cells break down sugar and fat for fuel, burning calories. Clearly there are a ton of ways to do this, but exercise physiologists lump cardio into three buckets -- long, slow distance...Read MoreAmplifeied
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