You don't need to be fit to start tennis
This might sound like fitness heresy, but hear me out: don't wait until you're in shape to play tennis. Play tennis and get in shape together. The fitness develops naturally as you play more.
That said, if you want to play better and longer without getting injured, some off-court training helps enormously. Tennis demands a weird mix of explosive sprints, sustained rallies, and quick direction changes. Most recreational players are fit enough for casual hits but fall apart in longer matches.
Cardio for tennis
Tennis isn't jogging. You don't need to run 10K to be tennis-fit. You need short bursts of speed followed by brief recovery, over and over for potentially hours.
Interval training mimics this pattern. Sprint for 20 seconds, walk for 20 seconds, repeat 10-15 times. Do that twice a week and you'll notice the difference on court within a month.
Long slow cardio has its place too. It builds the base that lets you recover between points. A 30-minute jog or bike ride once or twice a week is plenty.
Lateral movement
Tennis is sideways. Most sports have you running forwards, but tennis has you shuffling side to side constantly. If you're only training forwards, you're missing half the picture.
Ladder drills, cone shuffles, and side-to-side exercises all help. You can also just shuffle across your living room during TV ads. It looks ridiculous but it works.
Core strength
Your power comes from your core, not your arm. Weak core, weak shots. Strong core, you can hit harder with less effort and stay balanced through awkward positions.
Planks are the classic core exercise and they work. Do them for time, aiming for 60 seconds. Add side planks for rotational stability. Russian twists with a medicine ball mimic the twisting motion of groundstrokes.
Three 15-minute core sessions per week is enough to see improvement. More than that and you're just being a gym hero.
Legs are everything
Tennis wrecks your legs. All those starts, stops, and direction changes load your ankles, knees, and hips repeatedly. Strong legs handle this stress; weak legs break down.
Squats and lunges are your foundation. Single-leg exercises are even better because tennis requires balancing on one leg constantly. Bulgarian split squats, single-leg deadlifts, and step-ups all translate directly to court movement.
If you only do one thing off court, make it leg work.
Flexibility and mobility
Tight muscles get injured. Tennis asks for a huge range of motion. Serving stretches your shoulder, groundstrokes rotate your spine, and reaching for wide balls tests your hips.
Stretch after playing, when your muscles are warm. Hold stretches for 30 to 60 seconds. Focus on shoulders, hips, hamstrings, and calves, the areas tennis tightens most.
Dynamic stretching before playing gets you ready to move. Arm circles, leg swings, walking lunges with rotation. Save the static stretching for afterwards.
Preventing injuries
Tennis elbow, shoulder problems, and ankle sprains are the classics. Most are preventable with proper preparation.
Elbow issues usually come from poor technique or playing too much too fast. If you're feeling pain, rest it. Don't push through. Elbow injuries become chronic when ignored.
Shoulder problems often start with weak rotator cuff muscles. Those little shoulder rotation exercises with a resistance band look boring but save careers. Do them as part of your warm-up.
Ankle sprains happen when you're tired and stop moving your feet properly. Good shoes help, but so does not playing exhausted.
Rest is training
Your body doesn't get stronger during workouts. It gets stronger during recovery. Playing every day is a recipe for injury and burnout. Two or three times a week is sustainable for most people.
Sleep matters more than most players realise. If you're not recovering between sessions, you're not improving.
Making it sustainable
The best training program is one you'll actually do. Three 20-minute sessions per week beats an hour-long workout you abandon after two weeks.
Find physical activities you enjoy. Swimming, cycling and hiking all contribute to tennis fitness. You don't have to grind through exercises you hate.
Find courts near you and get playing. Fitness comes with practice.