11 Differences Between Swimming and Gym Workouts That Impact Weight Loss

8. Skill requirement and the swimming learning curve

Technique matters more in the pool than in many gym exercises. Efficient swimming requires breathing patterns, stroke mechanics, and turns that significantly affect speed and energy use. That learning curve means beginners often expend more energy inefficiently or tire quickly, reducing the calories burned for a given time in the water. Coaches and lessons improve efficiency and allow swimmers to increase intensity safely.