Looking to start (or end) the day with a little invigorating activity outdoors? Alone, in a group or in a class, you can practice yoga at a vineyard, join in tai chi by the sea, launch a canoe or kayak at dawn.

OUTDOOR YOGA — WITH A TWIST

ON THE WATER Greet the morning sun in a floating, slow-flow yoga class, on a paddleboard anchored in the gentle waters bordering a salt marsh. “It’s a slow-flow Vinyasa class, consisting of classic yoga moves, sun salutations and plenty of hip openers and shoulder stretches,” says instructor Jennifer Hanono, 29, of Long Beach. “I offer some challenging poses they can play with, but it’s all fun.” You’ll get an hour of floating yoga followed by a 15-20-minute “moving meditation” paddle through bay waters.

INFO $45, 9 a.m. Saturdays, 10 a.m. Sundays through Sept. 18 at Skudin Surf, 10 Broadway, Island Park, 516-713-7873, skudinsurf.com/sup

BY THE VINEYARDS This Hamptons yoga program, held inside an open 1,800-square-foot “event tent” overlooking the vineyards and a sculpture garden, offers something for beginning and advanced practitioners. “It includes restorative yoga, Reiki healing circles and Buddhist meditation sessions,” says John Seelye, owner and director of One Ocean Yoga, and one of a dozen instructors.

INFO $25 ($15 students younger than 24), daily classes start at 8 a.m., with the last class at 6:30 p.m., through September at One Ocean Yoga, Channing Daughters Winery, 1927 Scuttle Hole Rd., Bridgehampton, 631-537-5522, oneoceanyoga.com

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BEGINNER-FRIENDLY PADDLING

STAND-UP PADDLEBOARDING Popular for several years around Long Island, several outfitters offer private lessons and guided tours. At the WaterFront Center in Oyster Bay, weekly Saturday morning intro lessons prepare beginners to paddle around, which is fun on its own, says program director Margaret Reddington. “You’re out on the water and in the sunshine, in a beautiful area, so it’s hard not to be happy,” she says. Once you’re up to speed, you can rent a paddleboard ($23 an hour) and go explore. A lifejacket is included. The center opens for rentals at 9 a.m. daily.

INFO $25, 10-11 a.m. Saturdays through Sept. 3 at 1 West End Ave., Oyster Bay, 516-922-7245, thewaterfrontcenter.org. Registration required.

CANOE/KAYAK Paddling is an upper-body workout, says Linda Sandstedt of Kings Park, who operates a kayak- and canoe-rental concession near the Nissequogue River in Smithtown. Singles, couples and families can take off on a 2 1⁄2-hour trip along a 5 1⁄2-mile stretch of the water. Early risers can launch around 7 to 8 a.m., depending on tides. Expect to see abundant wildlife, including many bird species, along the way. “You’re paddling down this beautiful river that hasn’t changed much in hundreds of years,” Sandstedt says.

INFO $60 canoes and double kayak rental ($50 single kayak) at Nissequogue River Canoe and Kayak Rentals, Paul T. Given County Park, Smithtown, 631-979-8244, canoerentals.com

TAI CHI IN THE PARK

For the 16th year, Laurince D. McElroy, laoshi (teacher) at Water Tiger School of T’ai Chi Ch’uan in Medford, offers free lessons to all comers at the public Shorefront Park by Great South Bay in Patchogue. Saturdays all month, McElroy gives a taste of the graceful, ancient Chinese martial art, which he says increases a practitioner’s strength and balance. Says McElroy, “At each session there’s a new focus on a movement or a principle of the art.”

INFO 9 a.m.- 11 a.m., Saturdays, Aug. 6-27 at Shorefront Park on Smith Street, Patchogue, 631-475-4300, patchoguevillage.org