Why Your Knees Hurt Worse Going DOWN the Stairs Than Up (and the Collagen Mistake Most People Over 50 Make)

My name is Mark Edwards. I'm the founder of Fixity Health in Orlando, Florida. I'm not a doctor, and nothing in this report should be read as if I were one. I'm a guy who got tired of grabbing the handrail.

Somebody you know sent you this because you mentioned your knees, your hands, your hips, or your back. Good. That means you're already paying attention, which is more than most people do until it gets bad.

I'll keep this short and plain. No jargon, no miracle promises. Just what I've learned, what research suggests, and what you can start doing this week for free.

What's actually going on inside that joint

Think of the end of each bone in your knee as being capped with a smooth, rubbery pad. That pad is called articular cartilage. Its whole job is to let bone glide over bone without grinding, and to absorb shock when you step, land, or twist.

Here's the part most folks never hear: that cartilage is made mostly of a specific kind of collagen called Type II collagen. Not the collagen in your skin. Not the collagen in your hair or nails. A different type, with a different structure, built for cushioning.

Cartilage also has very little blood supply. That matters. A cut on your arm heals in a week because blood brings in everything needed to rebuild. Cartilage doesn't get that delivery service. It gets nourished slowly, mostly by the joint moving and squeezing fluid in and out of it, like a sponge.

So when that pad starts to wear thin, which research suggests begins for many people in their forties, the body is slow to replace it. The surface gets rougher. The joint gets a little less fluid. The muscles around it tighten up to protect it. That's the stiffness you feel in the morning and the ache you feel after sitting too long.

Stiff and achy isn't a sign your joint is "done." It's often a sign the cushion is thin and the joint isn't moving enough to feed itself.

Why going DOWN hurts more than going up

This one puzzles people. Going up the stairs is harder work, so why does going down hurt more?

When you climb, your thigh muscles do the lifting and your knee is loaded with your body weight more or less straight on. When you descend, your knee has to bend while it's catching your weight. Your kneecap gets pressed hard into the groove of your thighbone, and the cartilage under it takes a much bigger squeeze than it does on the way up.

If that cartilage is thin or roughened, going down is where you'll feel it first. Same with getting out of a low chair, squatting to pick something up, or walking downhill.

It's not that you're weak. It's that a specific surface is being asked to do a job it's not cushioned for anymore.

Your hands work the same way on a smaller scale. The joints in your fingers have the same kind of cartilage, and the same slow nourishment. That's why the first few minutes of gripping a coffee mug in the morning can feel like somebody poured sand in the hinges.

The mistake almost everybody makes

I've made all three of these myself.

Mistake one: the wrong collagen. Walk into any store and you'll find collagen powders and pills everywhere. Most of them are Type I and Type III collagen, usually from cow hide or fish. Those are wonderful for skin, hair and nails. But Type I collagen is not what your joint cartilage is made of. Taking it and expecting your knees to notice is a bit like putting diesel in a gasoline engine. Nothing bad happens, but nothing good happens either.

If joints are your concern, the type you want to look for is Type II, and research suggests the form matters too. "Undenatured" Type II collagen (often labeled UC-II) is processed cold so the protein keeps its natural shape. Heat-processed, or "hydrolyzed," collagen gets broken down into smaller pieces, which is fine for a skin product but loses the structure that seems to matter for joints.

Mistake two: waiting. Joint wear is slow and quiet. By the time you're avoiding stairs, it's been going on for years. Most of us figure we'll "deal with it when it gets bad." But cartilage is slow to rebuild and quick to keep wearing, so every month you wait is a month of extra grinding. The best time to start supporting a joint is when it's a little stiff, not when it's a lot stiff.

Mistake three: "It's just age." Age is part of it, sure. But two people the same age can have very different knees. Weight, movement habits, footwear, sleep, and diet all play a role, and every one of those is something you can change. Blaming age is a way of letting yourself off the hook, and I say that with love, because I did it for years.

Your knees don't know how old you are. They know how much they're loaded, how well they're fed, and how often they move.

Five free things to do this week

None of these cost a dime. Pick two and start today, then add the others.

1. Walk before you decide you can't. Cartilage gets fed by motion. Ten to fifteen minutes of easy walking, twice a day, on flat ground, does more for a stiff joint than lying on the couch waiting for it to loosen up. If it hurts to walk, shorten the walk, not the habit. Flat and slow beats hilly and fast.

2. A five-minute morning routine. Before you get out of bed, or right after:

• Lie on your back and gently pump each ankle up and down 20 times.
• Slide one heel toward your backside, then straighten the leg. Ten times each side, slow and smooth.
• Sit on the edge of the bed and straighten one knee out in front of you, hold two seconds, lower. Ten times each side.
• Open and close your hands into a loose fist 20 times, then spread the fingers wide and hold for five seconds. Three rounds.
• Stand, hold the dresser, and do five slow half-squats, only going as low as feels comfortable.

That's it. Five minutes. It warms up the joint fluid and reminds the muscles around the joint that they have a job.

3. Look at your shoes. Worn-out soles, flat flip-flops, and hard dress shoes send every step straight up into your knees. A shoe with real cushion and a little support in the arch can change how your knees feel by the end of the day. If you live in Florida like I do and spend half your life in sandals, this one's for you.

4. Eat for your joints. You don't need a special diet. You need more of a few things and less of a few things.

• More: fatty fish like salmon or sardines, olive oil, leafy greens, berries, bone broth, beans, nuts.
• Less: sugar, fried food, and the processed snacks that research suggests tend to feed inflammation in the body.

Drink water. Cartilage is mostly water and it can't stay plump when you're dried out.

5. Sleep and weight, the two nobody wants to hear. The body does most of its repair work while you sleep. Seven hours beats five. And every extra pound you carry is multiplied several times over on your knees with each step down a stair. You don't have to lose fifty pounds. Research suggests even a modest drop takes a real load off the joint. Start with the walks and the sugar, and let the scale follow.

Motion, shoes, food, sleep, weight. Five levers. All free. All in your hands.

What to ask your doctor

I'm not a doctor, and I'd be doing you a disservice if I pretended this report replaces one. If your joint is swollen, hot, locking, giving out, or hurting at night when you're not using it, see your physician. Those are different problems than everyday wear.

When you go, bring questions. Doctors answer what you ask. A few worth asking:

• "Is this wear-and-tear, or is something else going on?"
• "Would an X-ray or imaging tell us anything useful right now?"
• "Is it safe for me to walk and do light movement daily?"
• "Are any of my current medications hard on my joints or my stomach?"
• "I'm thinking about trying a Type II collagen, glucosamine and chondroitin supplement. Any reason I shouldn't?"

That last one matters. If you take blood thinners, have a shellfish allergy, or have other health conditions, your doctor needs to weigh in before you add anything. I'll say it again at the bottom of this report and I mean it.

Write down what they tell you. Half of what gets said in an exam room is forgotten in the parking lot.

What we built for this

Everything above works on its own. I'd be glad if you closed this report and just started walking. But I'll be honest about why I started Fixity Health.

I went looking for a collagen product that was actually built for joints, not skin, and I kept finding Type I powders dressed up with pictures of people jogging. So we built Flex Force 5X, the formula we built for exactly this.

It's a five-type collagen formula, Types I, II, III, V and X, for complete collagen coverage. The joint piece is undenatured UC-II Type II collagen from chicken sternum, cold-processed, so it keeps the structure that heat processing destroys. We paired it with glucosamine, chondroitin and hyaluronic acid, the three ingredients people have asked about for years.

Each bottle holds 90 capsules, a 30-day supply, delivering 1,800 mg daily. It's made in the U.S. in an FDA-registered, GMP-certified facility, non-GMO and gluten-free.

And because I know how many bottles of "joint pills" end up half-used in the medicine cabinet, it comes with a 60-day money-back guarantee, no restocking fees. Try it for two months. If your joints don't notice, send it back.

That's the whole pitch. No pressure. The walks and the shoes come first.

Mark Edwards
Founder, Fixity Health
Orlando, Florida