The motion of a boat or car causes the eyes and inner ear to send conflicting signals to the brain, causing motion sickness. Symptoms include headache and nausea.
HEAD IT OFF: Keep windows open and fresh air circulating, and bring a travel pillow to minimize movement of the head. Focus on the horizon line or another steady, distant point. If those strategies fail, keep ginger capsules handy. Studies suggest ginger can alleviate the symptoms of motion sickness. Take 500 to 1,000 mg every four hours until nausea subsides.