If you’ve ever crawled down the stairs, groaned getting off the toilet or penguin-walked to your car the day after training, this one is for you. Here’s what’s actually going on in your legs, and the simple three-step routine that helps active Australians get back into it the next day.
You know the moment. The session felt great. You drove home feeling strong, maybe a little smug. Then you wake up the next morning, swing your legs out of bed, and your quads have filed a formal complaint. Sitting down is a negotiation. The stairs at work are a problem. One lifter summed it up online in six words: “Yesterday was my first leg day. I can’t walk.”
For years, the people writing to us at Zea were mostly dealing with stiff joints and old injuries. Then the gym reviews started arriving. Runners, Pilates regulars, a bloke who ran 270km across seven days in New Zealand. They were all asking the same question: why does the day after hurt more than the session itself?
That deep, tender ache has a name: delayed onset muscle soreness, or DOMS. It’s most common at the start of a training block, when you come back after a break, or the first time you try a new type of movement (Cheung et al., 2003).
The big trigger is eccentric work: the lowering half of a squat, running downhill, the slow negative on a lunge. Those movements create tiny amounts of micro-damage in the muscle fibres, and the soreness builds as your body responds over the next one to three days. That’s why it often feels worst on day two, not day one.
And here’s a fact most people don’t expect. In one study of 106 people doing the same gym exercise, the 18 to 29 year olds reported significantly more soreness than the 40 to 65 year olds (Hyldahl et al., 2010). So if you’re young, fit and still hobbling, you’re not doing it wrong. It’s just biology.
If you’ve dealt with DOMS before, you’ve probably already tried some of these:
Here’s the pattern. Each of these covers one moment, at best. A stretch after the session. A roll at lunchtime. A rub at night. But DOMS isn’t a one-moment problem. It builds over two or three days, and it shows up at three very different times: straight after training, that evening when you finally stop, and the next morning when you try to get out of bed.
Treat one of those windows and leave the other two, and you’ll still be crawling down the stairs.
When we looked at the reviews from our most active customers, the ones who kept coming back didn’t use one product. They built a little routine that covered all three windows. We’ve tidied it up and put it in one box, but the logic is simple enough to steal.
Window 1 · Within the hour after training
Sports scientists who pooled 32 controlled trials found that cold therapy applied within an hour after exercise reduced DOMS pain over the following 24 hours, and so did heat (Wang et al., 2021). Most of us aren’t climbing into an ice bath at 6pm on a Tuesday. A spray isn’t an ice bath, and we won’t pretend it is. But a cool, minty hit straight onto tired quads or calves in the change room is the version that fits in a gym bag.
MAGZEA is a magnesium spray made with magnesium chloride, Tasmanian Kunzea oil, peppermint and spearmint. The mint gives an instant cooling sensation. It’s non-greasy, non-staining and fast drying, so you can spray, wait a moment and pull your leggings back on. And it smells fresh, not like a football training room.
Window 2 · That evening
The second window is the one everyone skips: the evening, when your legs finally stop moving and start stiffening. Warmth is the other half of that same research, and a warm soak is the easiest way to get it.
Add half a cup of MAGZEA Muscle Recovery Salts to the bath (or 2 to 3 tablespoons to a foot spa) and soak for 15 to 20 minutes. They’re magnesium bath salts made from magnesium chloride flakes (not Epsom salt), finished with Kunzea, peppermint and lemon ironbark oils, and there are up to 12 soaks in a bag. No bath? A foot spa works fine after a long run.
Window 3 · Before bed and the next morning
The third window is the stairs moment, and it starts the night before. Zea’s Magnesium Oil Topical Spray is pure magnesium oil: just two ingredients, water and magnesium chloride. Spray it onto tight calves, quads or shoulders after your shower or soak and rub it in. Many customers do it 30 to 60 minutes before bed as part of winding down.
Then keep the bottle in your gym bag for the stiff spots the next morning. One honest note: plain magnesium oil spray can tingle on first use, especially on dry or freshly shaved skin. Apply it to slightly damp skin and it usually settles as your skin gets used to it.
Kunzea ambigua is a native Tasmanian shrub, and it’s the botanical at the heart of everything Zea makes. It’s in the MAGZEA spray and the MAGZEA salts, alongside peppermint, so the routine smells like one fresh, eucalypt-and-mint thing instead of competing chemist products. The magnesium oil stays pure and unscented, so it works around both.
A straight answer on topical magnesium. You’ll see big claims online about magnesium soaking through your skin. The honest answer is that scientists are still arguing about how much gets through, so we don’t sell this as a magnesium supplement. People use these products because of how they feel: cool after training, relaxed after a soak, comfortable the next morning. As one customer put it: “Not going to stop using something that works well.”
We didn’t run a lab trial. What we have is a lot of honest feedback from verified Zea customers who train. Here are the ones that answer the questions we get most, in their own words.
“Will it actually do anything?”
“Purchased this spray with some doubt that it would have any benefit but decided to try it despite my physio telling me that sprays, creams & gels don't have good absorption on skin and since I started using it I can get up in the morning without limping”
“Will it hold up to serious training?”
“I have recently done a 6 stage 7 day ultra marathon in Queenstown NZ. With the total distance being 270km … I applied this great product before and after each day of running and it kept the muscle pain right down. Plus I was stocked to even get 2nd place.”
“Will I be right for my next session?”
“No sore muscles over the next few days either!”
“Will I smell like a change room?”
“Not sure what the peppermint component does but gives the spray a lovely scent & doesn't reek like a sports gel remedy.”
“Does it sting like other magnesium sprays?”
“I have bought other sprays of Magnesium and it's after effect tingle. This one seems to have a cooling effect.”
“Will it leave me sticky?”
“dries fast enough, so it does not remain sticky on clothing”
“Does it fit a real routine?”
“I use it before bed to help my muscles relax & recover overnight, able to get back into it the next day”
Individual results may vary.
We started Zea in 2016 around one Tasmanian plant. We’re a certified B Corp, we give 1% of sales to the planet, and everything in this bundle is made and owned here in Australia. None of that makes your legs less sore. But it should tell you we’re not going anywhere, and we’ll stand behind what we sell.
It’s two days after leg day. You get out of bed without bracing on the bedside table. You take the stairs at work like a normal person. At lunch you’re thinking about your next session instead of dreading it. And you smell like fresh mint, not a locker room. That’s the whole point: not a miracle, just back into it tomorrow.
If this sounds like your week, here’s the easiest way to start.
The full three-window routine in one box: cool it, soak it, settle it.
Always read the label and follow the directions for use. External use only; patch test before use.
Mostly unfamiliar or eccentric work (lowering movements, downhill running, a new program) that causes micro-damage in the muscle fibres. Soreness builds over the next 24 to 72 hours as your body responds, which is why day two often feels worse than day one.
Soreness is a side effect of training, not a score for it. Nothing in this routine changes how your muscles adapt to training. It’s about feeling comfortable enough to move well and show up for your next session.
MAGZEA Muscle Recovery Spray is built for training: magnesium plus Tasmanian Kunzea, peppermint and spearmint for a cooling feel before and after a session. Magnesium Oil Topical Spray is pure magnesium chloride and water, the simple everyday option for tight spots and winding down at night.
A mild tingle on first use is common with plain magnesium oil, especially on dry or freshly shaved skin, and it usually settles with regular use. Apply to slightly damp skin, avoid broken skin and patch test first. MAGZEA adds mint, so most customers describe a cooling feeling instead. Both are designed to dry fast without a greasy film.
Not better, different. Epsom salt is magnesium sulfate; MAGZEA salts are magnesium chloride flakes, which dissolve faster and more completely in warm water. Pick the soak you enjoy: the point of window two is 15 to 20 minutes of warmth for tired legs.
Spray MAGZEA onto worked muscles before and after training. Soak in half a cup of MAGZEA salts for 15 to 20 minutes that evening. Spray magnesium oil onto tight spots before bed (2 to 4 times a day as needed) and rub it in. Always follow the label.
Honestly, the research is still divided, and we don’t claim the sprays or salts raise your magnesium levels. People use topical magnesium for how it feels: the cooling spray, the warm soak, the wind-down ritual. If you think you’re low in magnesium, that’s a conversation for your GP.
Yes. Add 2 to 3 tablespoons to a foot spa or a large bowl of comfortably warm water and soak your feet for 15 to 20 minutes after a long day or a hard session.
P.S. The best review we’ve ever had from a runner wasn’t about pain at all. It was from a bloke who finished a 270km, seven-day ultra in second place and said the spray “kept the muscle pain right down”. You don’t need to run 270km. You just need to get down the stairs on Thursday.
Hayden, Zea founder
