Whiplash While the other four causes can occur at anyone any time, Whiplash commonly occurs after a car accident; the head moves forward and then quickly snaps back, similarly to when someone knocks your muscles from behind. When you visit a physical therapist, they are likely to recommend a prescription or physical therapy, depending on your pain level. Such sessions can be expensive, and not everyone can afford them, so Neck Hammock is a great alternative. Who is this cervical traction for? Have you ever woken up in the morning or just returned from work after a long day and found your neck hurting?