You’re locked in. The bar is loaded. You brace your core, creating that internal pressure belt to protect your spine. You pull. The weight moves. But as you lock out, you feel it - a sudden, unwanted release.
You can tell right away it isn't sweat.
If this sounds familiar, you aren't alone. In the world of heavy lifting, it’s a silent epidemic. You’re strong, you’re capable, but your body is reacting to the immense pressure you’re putting it under. It’s frustrating, it’s embarrassing and it’s killing your focus.
It’s Physics, Not Failure
First off, let’s kill the shame. Leaking when you lift, known as Stress Urinary Incontinence (SUI) is often a mechanical issue, not a weakness of character.
When you perform a heavy compound lift like a squat or a deadlift, you perform the Valsalva maneuver. You take a deep breath and brace your core to stabilise your spine. This creates massive Intra-Abdominal Pressure (IAP). This pressure is great for your back, but it has to go somewhere. It pushes down on your pelvic floor and your bladder.
If that downward force exceeds the closure pressure of your urinary sphincter, you leak. It’s simple physics. It happens to powerlifters, Strongman competitors, and everyday gym-goers pushing their limits.
The "Just Deal With It" Trap
For years, guys have just dealt with it. They wear dark shorts. They rush to the bathroom between sets. They wrap towels around their waist "to wipe off sweat."
But the mental toll is real. Instead of visualizing your next rep, you’re visualizing a wet spot on your shorts. You’re holding back, not because your muscles can’t take the weight, but because you don’t trust your bladder.
You wouldn't lift with a belt that might snap. Why lift with underwear that can’t back you up?
The Solution: Gear That Grinds With You
This is exactly why we built Frank’s Pants. We saw guys leaving the gym early or quitting heavy lifts entirely because of leaks. That didn't sit right with us.
Frank’s Pants are designed to handle the pressure, literally:
1. Stealth Performance: Our absorbent tech is integrated directly into the boxer brief. It looks like premium athletic wear, feels like a second skin, and hides the evidence completely.
2. Heavy Duty Protection: Whether it’s a few drops from a heavy deadlift or a surge from a box jump, we’ve got you covered. Our materials lock moisture away instantly, preventing odour and that swampy feeling.
3. Stay in the Zone: When you know you’re covered, the fear disappears. You can brace as hard as you need to. You can grind out that final rep. The only thing you need to focus on is the lifting.
Why We Built This
We built Frank's Pants for every man who refuses to let his body slow him down. Our Founder saw how leaks stripped away confidence, from grandfathers to gym rats. He realised that the "solutions" on the market weren't suitable for the modern man.
We believe you shouldn't have to choose between lifting and staying dry. You deserve gear that respects the work you put in.
Reclaim Your Lift
Don't let a mechanical glitch dictate your training. Understand the physics, respect your body, and equip yourself with the right tools.
Load the bar. Brace hard. And let Frank’s Pants handle the rest.
Frequently asked questions
Why do I leak when I squat or deadlift?
Because of pressure, not weakness. Bracing for a heavy lift creates intra abdominal pressure to protect your spine, and that pressure has to go somewhere, so it pushes down on your bladder and pelvic floor. If the downward force is greater than the closure pressure of your urinary sphincter, urine escapes. It is mechanics.
Does a lifting belt make leaking worse?
It can. A belt is designed to help you build more pressure inside your abdomen, and that is the same pressure bearing down on your bladder. If leaks only show up on belted sets, try loosening it a notch or leaving it off for lighter work. Do not give up spinal support entirely just to chase a dry rep.
Should I stop bracing or holding my breath to avoid leaking?
No. The brace is protecting your spine under load, so dropping it is a bad trade. Better moves are exhaling through the sticking point on lighter sets, spreading the pressure through the whole trunk rather than bearing straight down, and training the pelvic floor to hold against it. A pelvic health physiotherapist can coach the breathing.
Can pelvic floor training stop leaks under a heavy bar?
It often helps. The pelvic floor works with your deep core to resist the pressure a brace creates, so training it makes that seal stronger and better timed. Expect weeks of daily practice rather than days. If the leaking is heavy, came on suddenly, or arrives with pain or urgency, see your GP before you treat it as a training problem.
Should I empty my bladder before a heavy session?
Yes, it usually helps, because a full bladder gives all that pressure something to push against. Take your time and finish properly rather than rushing back to the bar. Spread your fluid through the day instead of drinking a litre right before you train, and remember pre workout coffee can add urgency of its own.
Do I need to stop lifting heavy if I leak?
Usually not. Leaking under load is a signal to look at your pressure management and your pelvic floor, not a reason to give up the barbell. Plenty of men keep training while they work on it, wearing leakproof underwear so their head stays on the lift. If it is getting worse over time, get it checked by your GP.
