Best is a heart rate monitor. Then online calculators. Least accurate is the display on the cardio machine.
“Sometimes the moments that challenge us the most, define us.” - Deena Kastor
Agatsu Kettlebell Instructor
Can-Fit-Pro Personal Trainer Specialist
9x marathon finisher/17x half marathon finisher
Mom (b. March 12, 2010)
| July Minutes: 1,911