This week the focus is on learning different breathing patterns, such as bilateral (every 3, 5, and 7 strokes) and unilateral breathing (every 4 and 6 strokes), which is a good thing to master in freestyle swimming.
For many swimmers, bilateral breathing can be really useful for keeping the stroke even, and helping to maintain a straight line during a swim.
This workout is the last of three in a series that focus on understanding heart rate. Heart rate is often written as HR### or HR##.
If using three digits it refers to the actual heart rate, or beats per minute. If using only two digits, it refers to the number of beats over 10 seconds, which is easier to measure than over 1 minute. Both numbers are good to know and understand.