It’s 8.30am and my trusty tracker has just notified me I’ve hit my 10,000 step goal. My aching legs bear testament too, albeit in a slightly different manner.

So, does this intrusive, vibrating gadget really serve any purpose? Well, I like the fact that somewhere in the universe something has clocked my hard work.

Digits, data and dashboards are all hard evidence I was pounding Tower Hamlets’ tarmac at the crack of dawn.

Acknowledgement and accountability aside, the role wearable tech plays in validating incidental exercise is underestimated.

A few weeks ago I undertook a hard, seven-mile Sunday run then hit the sofa – #sorrynotsorry.

The following week, I spent a day at Kew Gardens. The difference in step counts for the two days was 13,000.

The run day in Canary Wharf totalled 12,000 steps, the day at Kew, 25,000 and my calorie-burn reflected that too (take that, low intensity haters).

But then we come to the bells and whistles. No longer just a posh pedometer, the modern day tracker measures everything from heart rate to time spent in REM sleep.

But how useful – and accurate – is this? Not very, at least according to one disgruntled US Fitbit user who filed a lawsuit earlier this year to prove his point – stating “thinking you are sleeping up to 67 minutes more than you actually are can cause health consequences, especially over the long term”.

I adore my Fitbit but I haven’t yet activated the common sense override – don’t you just sleep if you’re tired?

And what of the round-the-clock heart rate monitoring? Only really a useful feature for the dedicated hypochondriac.

I don’t need a tracker to tell me my beats increase when I’m in London traffic, late for work, with brake lights as far as the eye can see. The palpitations are enough.

I suspect wearables are currently most useful to those who need them the least – the fit, the healthy, the slightly self-obsessed.

What would be really amazing is if they were embraced on a massive scale by the chronically inactive, opening doors to people desperate for a helping hand.

They can be instrumental in facilitating long term behaviour change. Then we’d be talking.

Our fitness guru – Isle of Dogs resident Laura – is a leading personal trainer and offers personal training sessions and classes in and around Canary Wharf via her website .