Dumbbells. The handheld weights that make us feel simultaneously like muscular gods and exhausted puddles of goo. But "Dumbbell" as a trend category is about more than just pumping iron (though there is plenty of that too). It's about strengthening the lower body with leg curls and presses, and getting creative with barbell pads and face pulls. It's about finding your fitness community with Fitocracy and your next great read with Notion Press. And it's about cultivating your arsenal of exercise equipment, including the rugged and impressive Arsenal Strength machines. So grab those dumbbells (and maybe a few other pieces of equipment) and get ready to lift, sweat, and trend like a boss.