Your 12-week cardio calendar
By Alexa Joy Sherman
Week one Week two Week three Week four
Day 1 10 min. easy run
Day 2 12 min. of intervals, alternating 1 min. easy run with 1 min. moderate run
Day 3 12 min. easy run
Day 1 12 min. easy run
Day 2 12 min. of intervals, alternating 1 min. easy run with 1 min. moderate run
Day 3 15 min. easy run
Day 1 15 min. easy run
Day 2 15 min. of intervals, alternating 1 min. easy run with 1 min. moderate run
Day 3 17 min. easy run
Day 1 15 min. of hill/stair reps, alternating 1 min. moderate run up with 1 min. easy run down
Day 2 17 min. easy run
Day 3 20 min. easy run
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