Matty Abel Running Academy

You saw the session. A pro posts their 20x400 looking smooth, so next track day you do the same. You get through it, barely, and you're wrecked for three days. You tell yourself that's what progress feels like.

It isn't. You didn't do a hard version of the right session. You did the wrong session. That workout was calibrated for a body years ahead of yours, and copying it doesn't borrow their fitness, it borrows their workload.

Here's what nobody explains. The elite doing 20x400 has the aerobic base to soak up that much quality, the recovery to back it up two days later, and a decade of adaptation underneath it. You do the same 20 reps and you've blown your whole week's worth of hard running in one hit. Same workout on paper. For them it's training. For you it's an overdose.

Because you have a weekly ceiling on hard work. For most recreational runners that's one quality session, two at the very most, with easy days between. Elites hold at least three genuinely easy days a week to protect the hard ones. And there's a second trap: the elite runs those 400s with full recovery so every rep is clean, but you copy the reps and not the rest, and by rep eight it's just fatigue accumulation. The effort's there. The adaptation isn't.

So scale the session to you. If a pro does 20, you might be a 12. Take the full recovery. One quality session a week is plenty. Judge a session by whether you could back it up, not by how destroyed you feel.

The reps on the screen aren't the workout. The right session is the one your body can actually absorb.

Follow for the physiology most coaches won't explain.

You saw the session. The runner you look up to doing big miles, sharp intervals, a brutal long run. And you thought, I could do that. So you copied it, or followed a plan built for someone way ahead of you. It felt good, until the ni**le, then the injury, then watching them cruise while you're hurt again.

You didn't get unlucky. Your ego picked a program your body hadn't earned yet.

Here's the mechanism. When you train, your heart and lungs adapt fast, aerobic fitness improves in three to four weeks. That's the bit you feel, the bit that says push. But your structure adapts far slower. Bone takes around four months to adapt to faster running. Tendons remodel over months to years. Your engine says go while your chassis isn't built, and that gap doesn't show up on your watch.

So when you copy the runner ahead of you, you have the fitness to attempt their session but not the structure to absorb it. They have years of loading under that work. You don't. The identical session that develops them overloads you. You're not injury prone. You keep handing your body work it hasn't been built up to.

And this is the ego part. Copying the runner ahead of you feels like ambition, but it's really refusing to accept where you are. The secure runner trains where his body actually is, not where his ego wants it to be. That's not soft. It's the discipline that gets him to where the hero is now.

So build from your current stage, not a hero or a goal. Respect the structural clock. Don't spike single sessions, exceeding 10% of your longest recent run sharply raises injury risk. Judge readiness by recovery, not how your lungs feel. And add strength work to build the chassis.

Train the body you have, not the one you wish you had.

Follow for the physiology most coaches won't explain.

The mid-run emergency. The bloat that turns your last 10k into survival. The gel that wants to come straight back up.

So you change the breakfast. Then change it again. Different timing, no coffee, different gel. And it keeps happening, because it was never the food.

Carbohydrate has to be physically carried across your gut wall by transporters. Glucose uses SGLT1, which saturates around 60 grams an hour. Fructose uses a different one, GLUT5, which is why combining both gets you to roughly 90 an hour, and why most modern gels have two sugars in them. Whatever you can't absorb sits there, pulls in water and ferments. That's the bloating and the toilet stop. Not nerves. Undelivered fuel.

You'll see 120 an hour everywhere now. It's real, but it needs a trained gut, and that research was done in cycling, which is far kinder on the stomach than running. I take around 90 in a marathon, and for most runners that's the sweet spot.

Here's the bit that changes everything: your gut adapts. In a study of 25 endurance runners, two weeks of gut training cut GI symptoms by around 60% and improved running performance.

And here's the mistake I see constantly. Runners do fuel their long runs, they just do it every 45 minutes because the long run feels easy. Then race day needs something every 20 to 25 minutes at a hard pace, with blood flow to the gut at its lowest. The gut has never done that. It rehearsed a different test.

That study that cut symptoms by 60%? It fed runners every 20 minutes. If race day is every 20, your long runs need to be every 20.

Your gut is an organ that adapts to training. You trained your legs for sixteen weeks. Give it six.

One note: ongoing gut symptoms, blood in your stool, or severe pain aren't a fuelling problem to train through. Get those checked by a doctor.

Tag the mate who plans every long run around toilets.

Follow for the physiology most coaches won't explain.

A high recovery score isn't built overnight. It's built by consistently getting the fundamentals right.

✅ Prioritise quality sleep
✅ Fuel your training properly
✅ Stay hydrated (3L+ daily)

Once those foundations are in place, recovery tools and technology can help you optimise the finer details.

Recovery isn't about finding one magic solution. It's about stacking good habits, day after day.

This one may hurt a few ego's but as a coach one of my biggest roles is stopping clients do "stupid sh*t".

Here's what nobody tells you. Intervals don't make you faster. They reveal how fast the body underneath them already is. Think of your fitness as a bank account. The base, aerobic volume, strength, sleep, fuel, is what puts money in. Hard sessions withdraw from it. You only get fitter if the balance was there to cover the withdrawal and you paid it back with recovery. Keep withdrawing from an account you never fund and you don't get faster, you go bankrupt.

And a bankrupt body triages. It shuts down what it considers non-essential. Bone stops being properly maintained, which is why stress fractures are everywhere right now. In men, testosterone drops, and with it libido, mood and recovery, one study found 40% of elite male runners had low testosterone and more bone stress injuries. In women, the cycle gets disrupted, and by the time the period actually stops, the damage to bone and hormones has been building for months. Losing your period is a late sign, not a first one.

This is the ego trap. Grinding more intervals feels advanced, feels like you want it more. But hammering intensity onto a body with no base is the most common mistake in the sport. You're not too soft to break through. You built nothing for the hard work to stand on.

So build the base. Get strong. Fuel the work. Earn your intervals instead of piling them on. And if your period's changed, your drive has dropped, or the bone injuries keep coming, get your bloods done.

Intervals don't raise your ceiling. They test it. Build the body first, then earn the speed.

This isn't medical advice, it's a reason to train in a way that doesn't break you.