Tennis does build muscle, but in a specific and uneven way. The sport’s explosive sprints, rapid direction changes, and powerful strokes create real hypertrophy in the forearms, shoulders, core, and legs. MRI studies of tennis players show their dominant arm carries roughly 13% more total muscle volume than their non-dominant arm. That said, tennis alone won’t produce the kind of balanced, full-body muscle growth you’d get from a structured weight training program.
Where Tennis Builds the Most Muscle
The muscles that grow most from tennis are the ones doing the heaviest work during strokes. An MRI study of tennis players found striking levels of hypertrophy in the dominant arm: forearm supinator muscles were 55% larger than the non-dominant side, forearm extensors 25% larger, forearm flexors 21% larger, and the deltoid (shoulder cap) about 11% larger. These aren’t small differences. For comparison, non-players in the same study showed only about 3% asymmetry between arms.
Your core gets serious work too. Every serve, forehand, and backhand involves vigorous trunk rotation, and surface electromyography readings confirm that the obliques, rectus abdominis, and erector spinae muscles all fire at high levels throughout different phases of a serve. The left-side abdominals and obliques activate strongly during the windup, while the right-side back muscles engage heavily during follow-through (for right-handed players). This constant rotational loading is why experienced tennis players tend to develop defined midsections even without dedicated ab training.
The lower body benefits from a different mechanism. Tennis involves 300 to 500 high-intensity efforts per match, with each point requiring explosive lateral bounds, split-steps, and rapid deceleration. Most of the force in lateral movement comes from the outside leg pushing against the ground, which loads the quads, glutes, and calves in a way that’s closer to plyometric training than steady-state cardio. Your ankles and hips also strengthen from the constant multidirectional demands.
Why Tennis Stimulates Muscle Growth
Tennis is essentially a form of high-intensity interval training. A typical match lasts over an hour, with short bursts of all-out effort (4 to 10 seconds) followed by brief rest periods (10 to 20 seconds). These bursts push your heart rate to 60% to 80% of its maximum and recruit fast-twitch muscle fibers, which are the fibers with the greatest capacity for growth. Fast-twitch fibers rely on stored carbohydrates for quick fuel rather than oxygen, which is why they fatigue rapidly but respond well to explosive, repeated efforts.
This matters because building muscle requires pushing fibers to the point of fatigue. Tennis does this naturally in the forearms, shoulders, and legs through hundreds of repeated explosive actions per session. The catch is that this stimulus is concentrated in specific muscles and movement patterns rather than distributed across the whole body.
The Limits of Tennis for Muscle Building
Tennis has two significant limitations as a muscle-building activity. The first is asymmetry. Because you play with one arm, your dominant side develops substantially more muscle than your non-dominant side. That 13% total arm volume difference found in players can contribute to postural imbalances and may increase injury risk over time, particularly in the lower back, where rotational and hyperextension forces already place stress on the spine.
The second limitation is caloric expenditure. Elite male tennis players burn roughly 10 calories per minute during training, with total daily energy expenditure averaging around 4,700 calories. Even recreational players burn significant energy during a match. Building new muscle tissue requires a caloric surplus, and the high energy demands of tennis can make it difficult to eat enough to support hypertrophy, especially if you’re playing multiple times per week. You’d need to deliberately increase your food intake to offset what you burn on court.
There’s also the simple fact that tennis provides little direct stimulus to the chest, biceps, and the non-dominant side of the upper body. Your back muscles work during strokes and postural support, but not with the progressive overload that drives consistent growth.
How to Maximize Muscle Growth From Tennis
If you want tennis to contribute meaningfully to your muscle development, playing two to three times per week gets you past the 150-minute weekly activity threshold associated with improved musculoskeletal health. But pairing tennis with targeted resistance training makes a substantial difference.
Compound exercises are the best complement. Squats and deadlifts load the legs bilaterally, correcting the side-to-side imbalances that tennis creates. Rows strengthen the back muscles used for posture during matches. Push-ups and shoulder presses build the chest and shoulders in a balanced way that single-arm racquet work cannot. For muscle growth specifically, moderate weights at higher repetitions (around 10 to 15 reps to fatigue) tend to be more effective than very heavy, low-rep sets.
Unilateral leg exercises deserve special attention for tennis players. Since lateral movement depends heavily on each leg’s ability to generate force independently, single-leg squats, lateral lunges, and lateral bounding drills build the reactive leg strength that both improves on-court performance and develops more balanced lower-body muscle.
Tennis and Muscle Preservation With Age
For older adults, the muscle-building question shifts from “how much can I gain?” to “how much can I keep?” Tennis is particularly effective here. The combination of impact loading, repeated explosive efforts, and sustained play duration creates a stimulus that helps preserve lean muscle mass over time. The sport’s structure naturally exceeds recommended physical activity guidelines when played regularly, and its mix of aerobic and anaerobic demands provides a broader stimulus than walking, cycling, or other steady-state activities alone. The social and competitive elements also tend to keep people playing consistently, which matters more for long-term muscle preservation than any single training variable.