Lisa Fierer, with Rocky Mountain Paddle Board, leads a Standup Paddle Board Yoga class at Boulder Reservoir in Boulder, Colorado July 7, 2014. Boulder Daily Camera/ Mark Leffingwell

Instructor: Lisa Fierer, of Boulder, who has been teaching yoga for more than seven years and had a background in white-water kayaking and competitive rowing. Fierer discovered stand-up paddleboard yoga a few years ago. The is the first full year Rocky Mountain Paddleboard has offered SUP Yoga regularly.

The response has been huge. Many classes sell out.

“In Boulder, we’re such an adventure-driven community of athletes and outsdoorspeople, and the merging of yoga, which is typically done inside, and taking that onto the water outside is appealing,” Fierer says.

What is the workout? A class that fuses stand-up paddleboarding with yoga.

First, we received instruction on land, learning about the board, paddle, various strokes and turns. Then we took