[3][4] However by 2013, Paddleboard Yoga was also being practised in Beverly Harbor, Massachusetts, a place with strong currents; each board was fitted with a small anchor.Beginners can in addition practise on the beach or in a swimming pool to gain the strength and flexibility to maintain the balance necessary when the board is afloat.[1] According to Alexa Pozniak on Boston.com, Paddleboard Yoga provides both "a physical workout", the core abdominal muscles constantly working to keep the body balanced on the board, and "an exercise in mental focus", not least to stay out of the water.[3] Jennifer Nelson, on Today.com, called the practice in shallow water in a Key West mangrove surrounded by fish and turtles "nothing short of a Zen workout".Practicing yoga on an unstable surface like a paddleboard engages stabilizer muscles, improving balance and coordination.