Swings and presses need different weights, so most people should start with two bells, not one. Starting weights by experience, cast iron versus competition bells, and what a sensible first purchase costs.
Air, magnetic and water rowers feel, sound and store differently. How each one makes resistance, what the damper and levels actually change, who each type suits, and a worked example for a shared flat.
Dial, spinlock or fixed hex: the right dumbbell depends on how often you change the weight, the heaviest lift you do and the floor you have. Numbers, trade-offs and a worked example for a spare-room setup.
