The Physio Post
Evidence-based physio insights in plain English
Mobility | Strength | Pain Science
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02/17/2026
Your back hurts the most in the morning and you don't know why.
Here's what's actually happening.
Your spinal discs are like sponges. During the day when you're upright, gravity compresses them and fluid gets pushed out. They get thinner.
At night when you're lying down, they rehydrate. They absorb fluid and swell back up. You actually wake up about 1-2cm taller than when you went to bed.
The problem? That extra fluid makes your discs stiffer and more pressure-sensitive first thing in the morning.
That's why bending over to put on your shoes at 6am feels completely different than bending over at 2pm.
It's not that your back is damaged. It's that your discs are full and stiff and need about 30-60 minutes to normalize.
What to do about it:
Avoid heavy lifting or deep bending for the first 30 minutes after waking.
Gentle walking helps the discs de-load faster.
A few cat-cow stretches on all fours can ease the transition.
Your back isn't broken. It's just hydrated. Give it time.
02/15/2026
Try this right now. It takes 10 seconds.
Stand facing a wall. Put your toes about 4 inches away from it. Now push your knee forward and try to touch the wall.
Rules: heel stays flat on the ground the whole time.
Could you do it?
If not, your ankle mobility is limited. And that one restriction is probably affecting way more than you think.
Limited ankle mobility forces your knees to compensate. Your knees compensating changes how your hips move. Your hips compensating puts load on your lower back.
That knee pain you've had for years? Could start at your ankle.
That lower back ache after walking? Could be your ankle.
The body is a chain. Restrictions in one link show up as pain somewhere else.
Good news: ankle mobility responds really well to consistent work. 2 minutes of calf stretching and ankle circles daily can make a real difference in a few weeks.
Tag someone who needs to try this test.
The most common advice people get for pain is also the worst.
"Just rest it."
"Take it easy."
"Stop doing what hurts."
And look, there are times when rest is appropriate. Acute injuries, post-surgery, severe inflammation.
But for the vast majority of chronic pain and stiffness that people over 40 deal with?
Rest makes it worse.
Your body adapts to what you ask it to do. If you ask it to do nothing, it gets really good at nothing. Muscles weaken. Joints stiffen. Pain sensitivity goes up.
Movement is medicine. Not random movement. Not just pushing through pain. But progressive, intelligent loading that rebuilds your body's tolerance.
That's what good physical therapy actually does. It teaches your body it's safe to move again. Gradually. Systematically.
Stop resting. Start rebuilding.
Knee pain after 40 is extremely common.
But most people deal with it completely wrong.
They rest it. They ice it. They avoid anything that makes it hurt. And then they wonder why it keeps coming back.
Here are 3 exercises that physical therapists commonly start knee pain patients with:
1. Wall sits (partial range). Teaches your quads to support the joint without aggravating it. Back flat against the wall, thighs at about 45 degrees. Hold 20-30 seconds.
2. Step-ups on a low platform. Controlled loading through full range of motion. Use a step that's about 6-8 inches high. Drive through the top foot, lower slowly.
3. Single-leg balance with a slight knee bend. Builds the stability and proprioception your knee needs. Stand on one leg, bend the knee about 20 degrees, hold 20-30 seconds each side.
Start easy. Progress slowly. Consistency beats intensity every time.
Save this for later.
02/14/2026
"My knees are bad."
Physical therapists hear this multiple times a day. And almost every time, what they actually find is that those knees aren't bad. They're just weak.
Here's what most people don't understand about knee pain after 40:
Your knees aren't wearing out from too much use. They're breaking down from not enough use. Or the wrong kind of use.
The cartilage in your knee needs load to stay healthy. It literally feeds on compression and movement. When you stop squatting, stop walking stairs, stop challenging those joints, they lose the stimulus they need.
Then one day you bend down to pick something up and your knee screams at you. And you think "I'm just getting old."
No. You're deconditioned.
That's fixable.
Not with rest. Not with a brace. Not by avoiding stairs for the rest of your life.
With progressive loading. Squats. Step-ups. Lunges. Gradually, intelligently, consistently.
Your knees want to work. You just have to give them a reason to.
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