I tried this 3-minute plank challenge from Anne Hathaway’s trainer — here’s what happened to my core

a photo of a woman doing a plank outside
(Image credit: Shutterstock)

Forget crunches and sit-ups. One of the best ways to blast your core is the oh-so-simple plank. When performing a plank with good form, you’re working your midsection, shoulders, chest, lower back, quads, and glutes. The secret of this powerhouse move is keeping a straight line from your head to your heels and squeezing your core to keep your body stable.

And it turns out the plank isn’t just the go-to core move of your favorite fitness instructor, as we found out when we stumbled across this three-minute plank challenge, set by Monique Eastwood. Eastwood has an A-list client base including Anne Hathaway, Stanley Tucci and Emily Blunt. Her method is a mix of Pilates, dance, strength training, ballet and yoga. Sounds tough? Wait till you try this.

What is the 3-minute plank challenge?

Eastwood shared her plank challenge, which comes straight from her Monique Eastwood Movement Method’ with IndyBest, telling them it is an ‘efficient way to work your core’. It only focuses on one move — the plank, however, it includes lateral toe taps and knee hovers to really work the whole body as you blast the core.

The good news is that you can follow along with Eastwood, but here’s a breakdown of the challenge:

  • Start in a high plank position, with your hands stacked under your shoulders, your core engaged, thinking about sucking your belly button into your spine, and a straight line down your back.
  • From here, hook your right foot over your left, keeping your hips square.
  • Bend both knees and hyperextend your arms to push back, before returning to a high plank.
  • Pointing your toe, take your right foot out to the side, tapping it next to your body.
  • That’s one rep, complete ten reps before switching to the other side.

What are the benefits?

Eastwood adds that this is an “all-over workout.” The bend and flex of the legs means you’re also working your inner-thigh muscles, as well as your core and pelvis. Plus that killer side tap forces you to utilize your oblique muscles to keep your torso stable.

The secret to achieving success is moving with complete control. I gave birth to my son a year ago and found it tricky to keep my pelvic floor muscles engaged as I got to the end of my reps, so I lowered my knees to the ground and took a breather before starting again. As a reminder, if you’re new to exercise or you’re returning to exercise following an injury or pregnancy, holding a plank for a minute is hard enough, and this can be a challenge you build up to. If you’re finding it too difficult, lower the number of reps you complete on each side.

Far from just building an A-lister physique, a strong core has several benefits. It can help reduce your risk of injury and lower back pain, help you move with better posture, and lift heavier weights in the gym. While you won’t get results after one three-minute workout, regularly adding core strength sessions to your routine, alongside a balanced diet, can help you see results.

More from Tom's Guide

Jane McGuire
Fitness editor

Jane McGuire is Tom's Guide's Fitness editor, which means she looks after everything fitness related - from running gear to yoga mats. An avid runner, Jane has tested and reviewed fitness products for the past five years, so knows what to look for when finding a good running watch or a pair of shorts with pockets big enough for your smartphone. When she's not pounding the pavements, you'll find Jane striding round the Surrey Hills, taking far too many photos of her puppy. 

You must confirm your public display name before commenting

Please logout and then login again, you will then be prompted to enter your display name.

Read more
a photo of a woman doing an elbow plank
I hate up-down planks — so I did 20 reps a day for 2 weeks anyway and this is what happened to my core
a photo of a woman with strong abs
I tried this 7-minute intense core workout — here’s what happened to my abs
a woman doing bicycle crunches on an exercise mat
I did this trainer's 6-minute core workout everyday for a week — here's what happened to my body
a photo of a woman holding a side plank
Forget the gym — this Pilates abs workout strengthens your deep core muscles in just 8 minutes
Woman doing a Pilates workout on a yoga mat at home
I tried this 7-minute abs workout from a Pilates instructor to strengthen my core — here’s what happened
Woman performing bicycle crunches on a yoga mat in a yellow room
Strengthen your core and improve your posture in just 10 moves with this 10-minute bodyweight ab workout
Latest in Fitness
a woman doing a kettlebell lunge
No gym needed — you just need 1 kettlebell and 30 minutes to build full-body strength and boost your metabolism
Man holding a dumbbell in right hand with elbow flexed during arm workout outdoors
You just need 20 minutes, 1 dumbbell and this superset workout to strengthen your whole body and boost your metabolism
a photo of a woman in her 60's working out
Not swimming or Pilates — a Harvard study reveals this exercise protects memories and keeps your mind sharp
Man squatting
I’m a personal trainer — forget regular squats, and try Spanish squats to reduce knee pain instead
the Orbea Denna on a gravel track
Orbea's new e-bike is designed to tackle both road and gravel — and you can build your own
woman exercising with ankle weights
I exercised with ankle weights for 3 weeks — here's what happened to my body
Latest in Features
A woman with long dark hair falls asleep quickly in a comfy bed dressed with soft white linens
I'm an ex-insomniac turned sleep coach — my 3 top tips to fall asleep quickly
LG G4 OLED in living room
This is the one setting on your HDR TV most people don't know about — here's how to tweak it
Chelsea Manning speaking at the NymVPN launch event
Chelsea Manning-backed NymVPN launches in bid to win the "censorship arms race"
Samsung Q60D QLED TV on console in living room
Here's why more sports games aren't broadcast in 4K — but streaming might have the answer
Asus ROG Ally
I love my ROG Ally, and these 5 simple tweaks help me game longer
2025 Nissan Ariya Platinum+ AWD review.
I drove the Nissan Ariya EV for a week — and it's nearly the perfect crossover