swimming vs. running?

Swimming is a great workout, but because you're not working against gravity (like you are when walking or running) you can feel like you're not working as hard swimming versus walking. Weightbearing exercise can be more intense because you're moving your body weight, unlike swimming where your body is floating in water.

To increase your intensity when swimming increase your swimming pace and really concentrate on pushing against the water (and keeping your limbs underwater more) so you're having to work harder.

Using a paddle board is another good way to keep swimming for a longer period of time, especially if your arms get tired when swimming.