BELLINGHAM, Wash. – As pickleball grows in popularity so are the number of injuries.

KOMO reports five million Americans are now regular pickleball players on an increasing number of courts across the country.

Physical therapists report seeing more and more of them with injuries from the sport.

They recommend a good warm-up and stretching routine for both upper and lower body before playing.

And they say you should not play through pain as the injury could get worse.

Pickleball was invented on Bainbridge Island by a former U.S. Congressman and friends who were bored and pulled together equipment from several different games to create the sport.