Cardio

Cardio covers more than running. A steady walk lets you talk, cycling changes with the wind, and a pool makes every arm pull work against water. Trails add inclines to hiking and rucking, while a rowing machine, rope or stair machine can fit a vigorous session inside a gym. Each activity taxes a different mix of muscles and breathing.

Hong Kong's humid outdoor weather can make a waterfront path feel harder than an air-conditioned room, but terrain and pace matter just as much. The same half hour can be conversational or demanding depending on how you move. Use the individual activity pages to adjust a reference estimate to your own time and weight.