Have all your selfies sprouted second chins lately? Thankfully, neck and chin toning can be achieved without surgery -- all it takes is adding a few targeted exercises to your workout. Over time, skin loses collagen and elasticity, causing it to sag around the neck and chin, a process that begins around age 20, according to Dr. Suzan Obagi, associate professor of dermatology at the University of Pittsburgh School of Medicine. Factors like sun exposure, smoking and poor diet can intensify the process. Two main muscles -- the sternocleidomastoid and platysma -- make up your neck, and toning them can help pull the overlaying skin tighter for a younger, healthier look. To achieve results, try the exercises on the next slides from personal trainer Mike Donavanik that are designed to help return your neck to its former glory.