Another great workout tool you may not be using yet? Sandbags
"I like sandbag training because the weight/resistance you are working with is flexible and soft, unlike barbells and other weights or dumbbells," says Cari Shoemate, a certified personal trainer and owner of Cari-Fit in Houston, Texas.
They are more comfortable to rest on your back for squats and lunges, and it's also easy to place on your spine for weighted planks. Sandbag training also gets your heartrate up if you use if for things like burpees or hold onto it during plyometric jumps or stair-climbing.
You can even use it for your abs, suggests Shoemate. Use it for long lever crunches (hold the bag overhead) or rest it on your legs to make leg raises and reverse crunches harder (it won't roll off!). To try it for yourself, Shoemate recommends starting with a 10-pound bag. If you're already an advanced exerciser, you can try a 20 (or more) pound bag. Purchase your own from UltimateSandbagTraining.com, or buy a bag at your local hardware store, Shoemate says.