For example, a 2x50 means swimming 50 yards (down and back), taking a 10-second break, and then swimming another lap. For a 4x25, swim the same distance, but rest every time you touch a side.

Swimming gives your brain a boost – but scientists don’t know yet why it’s better than other aerobic activities Published: July 27, 2021 8:02am EDT Seena Mathew , University of Mary Hardin ...

Swimming and running are both excellent forms of cardiovascular exercise. They both burn calories and fat, help with weight loss, tone your muscles, and boost cardiovascular fitness. Learn more ...

When it comes to swimming vs. running, both have their pros and cons. Fitness experts weigh in to help you decide which is right for you.

A personal swimming challenge: How an Oregonian visited 15+ swimming holes every summer for 8 years. Published: Jun. 21, 2025, 6:00 a.m. The best swim spots around Portland for this summer. By .