Cardio gets talked about as one thing. It's three: your heart, your lungs and your circulation, working as a team. What training does to each one, told straight, and the everyday wins you'll actually notice.

There's a state I think of as the zombie: never properly asleep, never properly awake. The way out isn't waiting for sleep to turn up on its own. It's earning it, and the research shows exactly how.

An engine that only ever idles down to the shops doesn't get an easy life, it gets a shorter one. Bodies work the same way. Why pottering isn't the safe option after 50, and what hard enough actually feels like.

Strength, yoga, Pilates, Tai Chi, Zumba, Dancercise: all of it is yours. Research says variety keeps you strong, steady, and interested. Head to the class you're certain isn't for you. Especially that one.