References

Discover interesting facts about cat intelligence, how they see the world, and why we keep them around.

Everything you need to know to photograph a meteor shower, from choosing the right time to camera settings, and some advanced techniques for creating meteor images you can be proud of.

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Buying Guide These are the best fitness trackers you can buy in every category, from Amazfit Balance and Garmin Fenix 8 to TicWatch Atlas

Here are the best cheap exercise bikes to buy in every category, from Echelon Connect to Yosuda and Zwift.

Discover interesting facts about who Neanderthals were, whether they mated with modern humans and when they died out.

These are the best walking treadmills you can buy in every category, from Mobvoi Home Treadmill to Bluefin Fitness Task 2.0 Treadmill.

Buying Guide These are the best humidifiers you can buy in every category, from Dyson AM10 and Levoit LV600HH to HoMedics TotalComfort Deluxe.

BUYING GUIDE These are the best running watches in every category, from Garmin Fenix 8 to Apple Watch Series 8 and Coros Pace 2.

Buying Guide These are the best rowing machines you can buy in every category, from Concept2 RowErg and Ergatta Rower to Hydrow Wave.

Buying Guide These are the best exercise bikes you can buy in every category, from the Peloton Bike and YOSUDA Bike to the Schwinn IC4.

Buyers guide These are the best running shoes for supination you can buy in every category, from Saucony Ride 16 and Brooks Glycerin 20 to Hoka Mach X.

BUYING GUIDE The best cycling shoes, from Peloton and Shimano RC1, to help you get the most out of your ride.

BUYING GUIDE The best Fitbit wearables, from simple fitness trackers to feature-packed smartwatches.

Discover interesting facts about how dolphins sleep, if they're dangerous, and what they eat.

Discover interesting facts about whales, how big they can get, and how they track down their prey.

Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings.

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From sets celebrating architecture and famous art to clever designs, these are the best Lego sets for adults.

References Rowing machines and treadmills do not challenge your cardiovascular system in the same way, so what is the science behind it?