17 Quiet, At-Home Cardio Exercises That Trainers Recommend
Break a Sweat With 17 Quiet, Bodyweight Cardio Moves That Won't Annoy Your Neighbours
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This tough mountain climber variation "will challenge your upper body strength while working your quads and targeting your abs," said Jenn Cino, NASM-certified personal trainer. "Your heart rate will be up in no time." You can use sliders or substitute towels, washcloths, or paper plates.