In a world where run clubs are the new way of speed dating, marathons are replacing nights out, and the Apple Watch has the option to be purchased with a Hermès strap, one thing is paramount - fitness (and looking after yourself) has become more popular than ever . Younger people, in particular, are choosing to ditch spending their Saturday nights listening to the local DJ in a club in order to be up and out for run club on a Sunday morning. And with that shift, also comes one other significant change - more people than ever are choosing to invest in gym wear, and not just any old gym wear , either.

I'm no marathon runner, but I do my 10,000 steps a day and try to head to two Reformer Pilates classes a week, and quality gym kit, for me, is essential. Sweaty Betty is my first port of

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