STEP 1.208 -0.7 (age) STEP 2. Step 1 Resting Rate STEP 3A. (For minimum heart ratel Step 2x0.50 STEP 4A Resting heart rate Step 3.A STEP 3B. (For maximum heart rate) Multiply your answer to STEP 2 by 85%. Step 48 * 0.85 STEP 5. Resting heart rate -Step 4 My vigorous intensity is from to bpm​