Image: supplied.

“You really need to shake up the exercise you do.” 

I still remember the judgey look my friend’s personal trainer girlfriend wore on her sweaty face after I revealed post-run, that I rarely ran.

That, in fact, my whole fitness routine consisted mainly of walking (with the occasional run thrown in there for good measure). 

That if I had to choose to commit to just one form of exercise for the rest of my life, I would unflinchingly, unhesitatingly devote myself to a 30 minute walk.

Related: 8 proven ways to become an ‘exercise person’.

Her reaction (and smug fit running pace) wasn’t a shock, it’s something I’ve become used to over the years. 

Since I could read magazines and watch The Biggest Loser, I’ve gleaned that exercise, and getting full benefit from said exercise, is about variation.

The message is clear: I should be filling the spare minutes in my morning, lunch break or evening achieving an endless amount of fitness escapades. 

Yoga on Monday! Pump class on Tuesday! CrossFit on Wednesday! Swimming on Thursday! (Post continues after gallery.)

5 yoga poses that'll fix your dodgy back

Legs up wall

This pose has a multitude of benefits for your mind and body. If you suffer from arteritis, headaches, high blood pressure or insomnia, the legs up move can be therapeutic. It can also relieve lower back pain and tired or cramped legs, and ease the symptoms of PMS, menstrual cramps and menopause. Added benefit: itll give you an energy boost and help ease anxiety and stress.

Puppy pose

The Puppy pose (best name ever) does great things for your upper body. Itll expand your chest, improve flexibility in your spine, and relieve any tension in your upper arms, shoulders and neck. It also stretches out your abdominals, opens your hips and stretches your hamstring. In terms of wellbeing, doing the Puppy pose will calm your mind and relieve symptoms of chronic stress, tensions and insomnia.

Corpse pose

It sounds morbid, but the corpse pose is the ultimate relaxation pose and will rejuvenate your body and mind. It can physically relax you, help to lower blood pressure, and reduce the symptoms of headaches, fatigue and insomnia. The pose can also calm your brain and help to ease stress and mild depression.

Standing forward fold

This pose positions your head below your heart, so straight away the rush of blood to your head will give you a big boost of oxygen. This has some great results - it can help to ease feelings of nervousness, stress, anxiety, depressions and fatigue, and relieve symptoms of asthma, menopause, headaches and insomnia. Physically, it stretches your hips, hamstrings and calves, keeps your spine strong and flexible, and strengthens your thighs and knees.

For a while, I obliged. I tried to haul myself to aerobics classes and Bikram Yoga because I thought it would have the best effect on my mind, my fitness and my body. Last year 

I even trained my butt off, dragging myself bleary-eyed out of bed a couple of times a week to train for a half-marathon.

Related: The 15 biggest fitness trends for 2015.

Yes, crossing that finish line brought me a great sense of achievement. 

But did I continue my burpees and mixed cardio after the fact? 

God no, it wasn’t sustainable for me. I fell swiftly back into the warm, comfortable embrace of my leisurely morning walk.

http://cdn.theglow.com.au/app/uploads/2015/04/half-marathon-sydney-feat.jpg Edwina only started smiling AFTER the race was over.

I fully understand that being a monogamous stroller who's content to lead a faithful fitness life is not "cool", nor is it in line with the current zeitgeist of working out to rival the likes of bloggers like Kayla Itsines.

A recent Australian study looked at the data of more than 200,000 Australians over the age of 45 and found that the key to living longer is exercise that makes you sweat. 

Yeah, that rules out most walking varieties. But you know what? Screw that.

Related: “I went in for a haircut, and couldn’t walk for 3 days” .

Shouldn't it be a positive thing that I'm doing regular exercise - even if I'm taking a Groundhog Day approach to it?

A good friend, Kat Mews, who also happens to be a myotherapist and personal trainer (a non-judgey one, thankfully) agrees with me. To the extent that a true exercise-lover can, any way.

http://cdn.theglow.com.au/app/uploads/2015/04/edwina-and-sister-blue-mountains-walk-feat.jpg Edwina and her sister, Liz, strolling around the Blue Mountains.

"Look, any exercise is better than none. Just don't expect amazing results if you don't put the hard work in," she explains, and as a woman who's passionate about 548 different types of exercise, I feel she's going fairly easy on me.

"By just walking, y

ou'll be as fit as you need to be to walk the distance you walk - no more. There are some health benefits to regular walking though - lower cholesterol, homestatis insulin sensitivity and more."

Related: The 12 weirdest fitness and diet trends thoughout history.

She's not wrong, walking comes with a huge amount of health benefits including reduced risk of heart disease and stroke, improved management of high blood pressure and diabetes, improved balance and stronger bones.

While I might be capable of living longer if I get my sweat on, there’s also a lot of evidence to suggest my style of fast walking is sufficient to keep me fit and healthy.

A Japanese study published in the Journal of Applied Physiology found that walking fast for three minutes, then strolling for three minutes, for half and hour can improve your fitness and health compared with walking at a leisurely pace.

Related: The 11 pieces of fitness advice you thought were true. They aren’t.

The reason everyone is so anti sticking to the same old exercise routine? Apparently our body gets so used to it and "plateaus" - you won't see as great results as you could be keeping your body guessing with different types of workouts.

"Unfortunately what you're doing is not that unusual to what most people do. You'll find if you go to a commercial gym that most people do the same exercise (or more often than not, use the same machine) for the same number of reps, or pace for the same period of time," explains personal trainer Blake Worrall-Thompson.

"The issue with that is that if you're not challenging your body to reach new levels you will plateau out and your results will slow down. The best thing you can do is CHANGE your program regularly and continuously increase the intensity."

Related: “Today I tried ‘plopping’. And it did very good things for my hair.”

I get this, I really do. But I feel healthy and fit the way I am. I eat (fairly) healthily and I don't overdo it on the alcohol front (very often, any way). So rather than fitness-shaming me, people, I'd appreciate it if I could be left to enjoy my beloved stroll.

Do you prefer varied exercise or one good old faithful workout? 

How the rich and famous stay fit

Lena Dunham.

Girls star Lena Dunham says exercise is vital to her mental health.

Margot Robbie.

Miranda Kerr.

Miranda Kerr weights for nobody. (Instagram)

Rosie Huntington-Whiteley.

Anna Kendrick.