“Why am I always so tired?” Staying static has the same negative effect as a week of insomnia, study confirms

Not moving similar effect to insomnia

Credit: Getty

Strong Women


“Why am I always so tired?” Staying static has the same negative effect as a week of insomnia, study confirms

By Miranda Larbi

3 years ago

1 min read

It’s hard to be super-active if you’ve got a desk job. But we should make more of an effort to move about, because not moving for hours on end can make you less productive, happy and confident, a new study has found.

Now that the great British summer is in full swing, more of us are inclined to head out for a midday walk to rack up our step count, resume running regimes or perhaps try a new gym class. Regular movement is the cornerstone of wellbeing, keep our heart healthy, our blood pressure stable and our muscles strong. 

Oh, and exercise in all its varied forms can also be great for our mental health. Don’t believe us? Well, a new study – of which Strong Women was a part – has found just how significant movement can be for confidence, happiness and positivity.

It’s not often you see the impact that exercise has on mental wellbeing being tangibly tracked. The Asics Uplifting Minds study, led by Dr Brendon Stubbs, set out to discover how potent movement – and the lack thereof – is on how good we feel. And it found that our mental wellbeing quickly drops off when we’re forced to take an elongated break from exercise.

50 people (including me) from 21 countries took part in the three-week study, which required us to work out as normal for a week, take a total break for the second week and then resume our usual practices for the third. On average, everyone’s wellbeing decreased, with scores that were “equivalent to the same mental impact as one week of broken sleep”, Dr Stubbs says. My own score during that week plummeted by a massive 40%.

It wasn’t just that we felt a bit down or listless; the study found that confidence levels dropped on average by 20%, positivity and energy levels fell and people were far less able to cope with stress.

After a couple of days of not being able to go for a stroll or doing my usual workout, I grew frustrated. I no longer had my usual anger outlet (running), stress buster (walking in nature) or total distractor (gym classes). And that left me feeling fatigued and self-conscious. If you’re ever been injured, you’ll know only too well how mentally difficult it can be to rest up – knowing that you might have days, weeks or months of being unable to move pain-free. Those battling long Covid or struggling with an overly heavy workload that doesn’t leave time for recreation will also recognise how quickly not exercising can impact their mood and energy levels.

I no longer had my usual anger outlet (running), stress buster (walking in nature) or total distractor (gym classes). And that left me feeling fatigued and self-conscious

But the good news is that those feelings quickly dissipate once exercise is resumed. “We found that after restarting exercise, the effects of inactivity were quickly reversed,” explains Dr Stubbs. “All participants’ scores immediately returned to positive levels, regardless of age or background.”

That means if you have had to stop exercising for whatever reason, it’s quick to mentally bounce back. Movement is always there for us, along with its many benefits.


Looking for some fitness motivation? Join us at the Strong Women Trek this June.

For more mental wellbeing tips and stories, visit the Strong Women Training Club.

Images: Getty

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