People who were having trouble walking confidently said they saw improvement in just two weeks.

Autumn is a good time to hit the trails or go cross-country, but rocks, roots and sharp turns challenge your coordination and stability, says Christine Mateer, a coach, physio and trail-race champion.

Another active sitting device, this smaller cushion inflates to its desired firmness and comes with its own pump. Covered with little nubbly bits, this balance cushion helps “improve balance and ...