Lifting dumbbells will tone your muscles. Consider getting at least two sets, one that's the weight you usually use and one that's a bit more challenging.
They provide resistance training for strengthening and toning muscles. Consider getting one that's a little tougher than the other so that you have two levels of resistance.
It adds variety to your core workouts. Try a 45-cm ball if you're less than 5 feet tall, a 55-cm ball if you're 5 foot 1 inch to 5 foot 7 inches, and a 65-cm if you're taller.
The best include strength, flexibility, and cardio routines. You can also find free exercise programs on TV.
Exercising on the floor can be tough on the joints, so consider a pad for cushioning.