T = 0.70 (M) T = Target heart rate M = Maximum heart rate = 220 - age For example, Geoff is 15 years old; therefore, Geoff's target heart rate would be figured as follows: Maximum Heart Rate: M = 220 - age M = 220 - 15 = 205 Target Heart Rate: T = 0.70 (M) T = 0.70 (205) T = 143.5 [round down] T = 143 Figure Your Target Heart Rate: Step 1: Determine your maximum heart rate. M = 220 - [your age] M = 220 - ________ = ________ Step 2: Plug your answer for M into target heart rate formula. Calculate your target heart rate. T = 0.70 (M) T = 0.70 ( ______ ) T = _______________ [round number down, if needed]