What progression per week is appropriate for advancing a beginner’s cardio when they already do 60 minutes of low-intensity work for the first week?
A. Progress to 30 minutes of low-intensity exercise and 30 minutes of moderate-intensity exercise in week two
B. Add 10-15 minutes/week until they reach 120 minutes/week
C. Progress to 60 minutes of moderate-intensity exercise per week
D. Add 20-25 minutes per week until they reach 150 minutes/week