When is the gain not worth the pain? Here's what experts think.

Exercise is amazing for our health ― it helps our mood, keeps our bodies healthy as we age, and may even help lower your risk of developing dementia.

The NHS writes: “Exercise can reduce your risk of major illnesses, such as coronary heart disease, stroke, type 2 diabetes and cancer, and lower your risk of early death by up to 30%.”

Amazing, right? If something free, often fun, and completely customisable to your preferences has such an amazing effect, why aren’t we all doing it?

Well, a few reasons ― one of which being that it hurts to really push yourself. So, when is the gain not worth the pain?

If you’ve got a bad back...

It’s estimated

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