Stand-Up-Paddlerin steht aufrecht auf dem SUP-Board und gleitet über ruhiges Wasser - Balance- und Ganzkörper-Training auf dem See.
2026-06-03

Stand-Up Paddleboarding: The Underestimated Full-Body Workout

Sonja Höslmeier, Redakteurin bei InspiredBySports

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Sonja Höslmeier

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6 min read

Everyone thinks stand-up paddling is just leisurely gliding across the lake. True-until you realize after an hour that your abs, shoulders, and legs are burning all at once. SUP is summer’s most underestimated full-body workout, and getting started is far easier than most people think.

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Quick Sprint

  • ▸ Full-body, not just gliding: Every paddle stroke starts in your core. Your abs, back, shoulders, and legs-working constantly to keep you balanced.
  • ▸ Low barrier to entry: Most people stand confidently after just ten minutes. Calm water, a wide board, and a little patience are all you need.
  • ▸ Technique over power: Grip the paddle wrong and rely only on your arms, and you’ll be exhausted in twenty minutes. The stroke comes from your hips.
  • ▸ Joint-friendly yet intense: No impact like running, but a real challenge for your deep muscles and sense of balance.
  • ▸ Perfect summer cross-training: Complements running, cycling, and strength training without replacing them. A day on the water doesn’t feel like a workout-but it absolutely is.

 

What SUP really does to your body

What is stand-up paddling? Stand-up paddling, or SUP for short, is a water sport in which you stand upright on a wide, float-stable board and propel yourself across the water using a long paddle. Sounds relaxing, but every stroke is a full-body workout.

The key factor is the sustained load on your deep muscles. As soon as you’re standing on the board, countless small muscles in your feet, legs and core are constantly compensating for the movement of the water. This happens subconsciously and never stops as long as you stay upright. These deep muscles are often neglected in regular strength training.

Add to that the forward thrust. A clean paddle stroke doesn’t start in the arm; it starts in the core: you plant the blade far forward in the water, pull through the rotation of your hips and upper body, and exit at foot level. Your arms are just along for the ride. Once you grasp this, you can paddle for hours instead of turning back after twenty minutes with burning shoulders. Like open-water swimming, technique determines endurance.

1 board
trains core, shoulders, legs and balance all at once
400 to 700
calories per hour, depending on pace, wind and waves
10 min.
until most beginners stand steady and calm

 

From Kneeling to Steady Stance in Five Steps

The biggest hurdle is mental: standing up for the first time. This sequence works almost every time on the first try-provided the water is calm and the board is wide enough.

1

Start on your knees

Kneel in the center of the board, roughly over the carry handle. Paddle a few strokes to get a feel for the board’s tilt. The handle marks your balance point.

2

Hands on the board, feet follow

Lay the paddle across in front of you, place both hands down, and move one foot at a time to where your knees were. Stay in a low squat-don’t stand up yet.

3

Stand up with your gaze on the horizon

Rise slowly, feet shoulder-width apart and parallel, knees slightly bent. Look ahead toward the shore-not down at your feet. Your gaze steadies your whole body.

4

Keep paddling immediately

A board in motion is far more stable than one standing still. Start with smooth strokes right away instead of trying to hold your balance motionless. Movement is your ally.

5

Power your stroke from the hips

Dip the blade well forward, pull through with your core rotation, and lift it out at foot level. Switch sides after a few strokes to stay on course and spare your shoulders.

 

What You Really Need to Get Started

Here’s the good news for anyone looking to start this summer: you don’t need to buy anything to give it a try. Almost every lake with basic facilities has a rental service, and one or two guided beginner sessions will teach you more than any video. Only when you realise you’re hooked does it make sense to invest in your own gear.

When it comes to your own board, most people opt for an inflatable iSUP. It fits in a backpack, is durable, and perfect for all-round use on lakes and calm rivers. The width matters more than the brand: a board around 80 centimetres wide is far more forgiving for beginners than a narrow race board. A secure leash and a life vest are must-haves, especially if you’re paddling solo. If you plan to make SUP a regular part of your week, pairing it with core strength training is a smart move-because a stable core makes every paddle stroke more efficient.

Pro tip: Head out in the mornings for your first few sessions. Early in the day, the wind is usually light and the water glassy, making it much easier to stay balanced. By afternoon, many lakes get breezier, and even a light wind can turn a relaxed cruise into a wobble-fest. And don’t be fooled by a tailwind on the way back-it’s not a gift, it’s a trap. Always plan your route so you’re paddling into the wind on the way out.

 

Why SUP Is the Perfect Move Right Now

Summer is the obvious season, but there’s more to it than that. If you’ve spent the winter training indoors, by June you’re probably craving something that doesn’t feel like a chore. SUP delivers exactly that: you’re outside, on the water, and still working on core stability and endurance-without staring at a stopwatch.

Then there’s the mental side. An hour on calm water, the steady rhythm of your strokes, no traffic, no screens. Many describe SUP as one of the few sports where body and mind unwind at the same time. As a counterbalance to an intense running or strength training plan, it’s pure gold. This summer, give it a proper go-not just for the Instagram shot, but as a real session.

Cool-down

Click on a question to reveal the answer.

Do I need to know how to swim for SUP?
Yes, you should. Even if you rarely fall in, being confident in the water is essential. Always wear a leash that connects you to your board-it’s your biggest flotation device. In deep or open water, add a life vest for extra safety.
Is SUP a good workout or just a fun leisure activity?
Both-it depends on how you approach it. A relaxed cruise is active recovery with steady core engagement. If you pick up the pace, paddle against the wind, or add intervals, you’ll get a challenging endurance and strength session. The best part? You can enjoy both in the same outing.
Inflatable or hard board for beginners?
For beginners, an inflatable SUP (iSUP) is almost always the better choice. It’s easy to transport, stores compactly, and handles bumps effortlessly. A hard board glides slightly better and offers more rigidity, but it’s worth considering only once you know exactly what you want. When starting out, prioritize width and stability over speed.
How often should I get on the water to see progress?
Just one or two sessions a week over the summer will noticeably improve your core stability and balance. Since SUP is gentle on your joints, it’s a great addition to your regular training. Gradually increase duration and intensity to keep your shoulders pain-free.
What should I wear?
In summer, swimwear plus a shirt for sun protection is enough. Don’t forget waterproof sunscreen, a cap, and something to drink. Since you’ll be on the water, stash any valuables in a waterproof bag. In cooler weather or early spring, a wetsuit is a smart choice.


Source header image: Pexels / PNW Production (px:9354934)

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