 The British Columbia Safety Council states that if proper food safety procedures are not followed, food set out for sharing in the workplace can serve as a breeding ground for bacteria, and recommends that perishable foods (for which it gives pizza, cold cuts, dips, salads, and sandwiches as examples) should not sit out for more than 2 hours.A survey conducted in 2005 found shopping caused headaches in nearly a quarter of people and sleeplessness in 11 percent.Phillips et al.