1TO1 Fitness

1TO1 Fitness is a personal training studio that focuses on one-on-one sessions with highly educated trainers. Its programs are built around each client's goals, schedule, medical history and lifestyle, and the studio also offers sports performance training for athletes who want to get stronger, faster and more durable. The business opened in 1987 as the first personal training-only studio in the DC area.

Sessions are available in one-on-one, two-on-one and three-on-one formats, and virtually. There are no commissioned salespeople, cold calls or contracts, and newcomers can book a complimentary trial session to see whether the fit is right. The McLean studio is on Westpark Drive and keeps evening hours on weekdays.