1:00
Heat Sweat and High Heart Rates: Running & Your Cardiac Output #running #run #marathontraining
Dr Will O'Connor
0:56
Why Heart Rate Doesnt Work for High-Intensity Running Intervals #running #run #marathontraining
0:57
Zone 2 Running - High Heart Rates - Efficient Muscle Fibers #running #run #marathontraining
0:29
The Surprising Energy Drain Youll Experience During a Marathon #marathontraining #marathon #running
0:53
Why You Can Run A Marathon With a High Heart Rate #running #run #marathontraining
0:34
The Surprising Truth about Steves Marathon Revealed with Power Data #run #marathontraining #runner
