Though canines love tennis for its bouncy yellow balls, humans appreciate the freedom to bark loudly with each swing and bury their favorite rackets all over the court. Become a tennis beast with today's Groupon: for $10, you get a 30-minute private tennis lesson at Tennis 4 All at Treaty Park in St. Augustine (a $20 value).

Certified USPTA and USPTR tennis guru Coach Bobby instructs racqueteers of all ages and abilities using his fun, casual QuickStart approach. Designed by the United States Tennis Association, this training method introduces the sport to fledglings by using smaller courts, slower balls, and disabling the game's chaotic multiball mode. Coach Bobby also tailors each private lesson to the student with specific techniques, such as improving a serve or developing a stronger backhand by repeatedly challenging people to a duel. Treaty Park's six lighted tennis courts gives players ample stages for Andre Agassi impersonations against a backdrop of 47 scenic acres of municipal park.