It may seem silly for anyone who's not the muscle behind a bookie trying to collect gambling debts, but a hand-grip strengthener can help protect you against carpal tunnel syndrome, especially if you spend a lot of time at a computer during the day.
"A hand-grip strengthener can help increase your grip strength and the strength in your hands, fingers, wrists, and lower arms to increase endurance and help with injury prevention," Jackowski says.
Resistance bands -- the lightweight, easily portable rubber bands you can use to add resistance to simple bodyweight movements -- come in a variety of shapes and sizes and are a versatile product that can amplify any bodyweight workout you might normally do.
"With resistance bands, you can still get a full-body workout with a whole lot less wear and tear due to the low-impact functionality," says Evan Betts, coach at New York City's Tone House. "You still get an incredibly effective workout while also building strength in your stabilizing muscles and core -- muscles that we sometimes forget about when focusing on major muscle groups."