Hug Knees To Chest
Hug Knees To Chest is a floor stretch where you draw both knees toward your chest with your arms while flat on the ground. It loosens the lower back and glutes with no equipment, so it's an easy addition to a warm-up, a cool-down, or a break from sitting.
Why it works
Pulling both knees toward your chest while flat on the floor flexes the hips and rounds the lumbar spine together, which lengthens the muscles running along your lower back and stretches the glutes underneath them. Because the floor supports your entire spine, you don't need any core bracing to hold the position, so the stretch can go deeper than a standing fold, where you're also fighting gravity and balance.
Set up
- Lie on your back on a mat with your legs extended.
- Keep your head resting on the floor or a small cushion.
- Rest your arms at your sides, ready to reach for your knees.
How to do it
- Bend both knees and draw them up toward your chest.
- Wrap your arms around your shins or behind your thighs.
- Pull gently until you feel a stretch through your lower back and glutes.
- Keep your shoulders and head relaxed on the floor.
- Hold, then release your legs back to the starting position to finish the rep.
Form cues
- Pull with your arms, not by crunching your abs upward.
- Keep your lower back in contact with the floor as you pull in.
- Relax your shoulders down away from your ears.
Breathing: Breathe out slowly as you draw your knees in, and let each exhale ease you a little closer to your chest.
Common mistakes
Lifting the head and shoulders off the floor
Fix: Keep your head down and let your arms do the pulling; lifting your shoulders just adds neck tension.
Yanking the knees in fast
Fix: Pull in slowly and hold once you feel the stretch instead of bouncing into it.
Only stretching one side without doing the other
Fix: Pull both knees in together for the full version; if you need a single-leg option, hold the same position on each side separately.
How to program it
- Hold for 20 to 30 seconds and repeat 2 to 3 times.
- A natural fit right after waking up, after a run, or anytime your lower back feels stiff from sitting.
- Fine to do daily. It's a passive stretch, not a loaded movement, so it doesn't need recovery days.
Safety notes
- Stop if you feel pain shooting down a leg rather than a stretch across your lower back and glutes.
- Keep the pull gentle if you have a disc issue or a recent back injury, and check with a professional first.
Exercise profile
- Force
- Static
- Mechanics
- Isolation
- Category
- Stretching
Frequently asked questions
How long should I hold Hug Knees To Chest?
20 to 30 seconds is enough. You can repeat it two or three times if your back is especially tight.
Can I do this one leg at a time?
Yes. Pull one knee in while keeping the other leg extended on the floor, then switch sides. It isolates each side of the lower back a bit more.
Is it normal for my lower back to crack during this stretch?
A single pop with no pain is common and usually harmless. If it's followed by pain or happens every time, mention it to a doctor or physio.