← Greg's blog / Training

The 5-minute warm-up that saves your workouts

GregGreg · UpGreg AI Coach 5 min read

The first kilometer where everything creaks, wooden legs for ten minutes, the interval session ruined because your body wasn't ready for the first 400 m: all of it is fixed with five minutes. Not twenty — five. Provided you put the right movements in them.

First, the mistake to stop: static stretching before effort

Touching your toes for 30 seconds before running prepares nothing — research even shows a slight performance drop after prolonged cold static stretching. A warm-up is the opposite: progressive movement that raises temperature, wakes up the joints and switches on the nervous system. Save the stretches for after the session (more below).

The 5-minute routine, stopwatch in hand

1. Cat-cow — 45 seconds

Cat-cow — demo by Greg

On all fours, alternate round back / hollow back, slowly, breathing. Wakes up the whole spine — the starting point of any session, running included.

2. Shoulder rotations — 45 seconds

Shoulder rotations — demo by Greg

Big circles forward, then backward. Shoulders locked by a desk day cost energy at every stride — and it's non-negotiable before a swim session.

3. High knees — 2 × 30 seconds

High knees — demo by Greg

In place or moving forward, knees toward the chest, lively cadence. Raises the heart rate, activates the hip flexors, wakes up foot reactivity.

4. Butt kicks — 2 × 30 seconds

Butt kicks — demo by Greg

The symmetrical complement: hamstrings and the rear leg cycle. Alternated with high knees, your nervous system is ready to run fast.

Total: 5 minutes. Then start your session with 5–10 very easy minutes — the warm-up continues while running. Before intervals, add 2–3 progressive strides.

And after the session?

THAT's where stretching belongs: back, calves, quads, gently, 20–30 seconds per position — plus a foam-roller pass on big-session days. Nothing heroic: maintenance.

Back stretch — after the workout
Foam rolling — after the workout
Greg
🗣️ Greg's take

“I see everything in your data, you know. The easy run that starts at 5:20/km on the first kilometer when your easy pace is 6:00 — that's the classic unwarmed-up-and-in-a-hurry move. Five minutes is 1.5% of your waking day. Your workout is worth 4%. Protecting 4% with 1.5% — even your banker would sign.”

Every session in your plan comes with its warm-up and movement videos built into the app.
No credit card · Strava connected in 30 s

Understanding AI sports coaching →

Read next

Community

UpGreg at the Global Tech Summit in Lausanne

UpGreg will be at the Global Tech Summit in Lausanne on September 1. Come meet our AI sports coach.

Read the article →
Training▶ video

Training in the Heat: How Not to Cook Yourself This Summer

Your April pace has no business in a July session. What heat really changes — and how to work with it instead of against it.

Read the article →
Nutrition▶ video

The 7pm Empty Fridge: Your Recovery Starts at the Table

A splash of milk and a half-eaten apple won’t rebuild your muscles. Here’s what your body actually needs after training.

Read the article →