Best time to have surgery: Morning (4x less likely to have complications in the morning than between 3-4PM)

Best time to get a human being on the phone when calling a company's customer service line: As early as possible (lowest call volume)

Best day of the week to eat dinner out: Tuesday (freshest food, no crowds)

Best day to fly: Saturday (fewer flights means fewer delays, shorter lines, less stress)

Best time to fly: Noon (varies but pilots say airport rush hours coincide with workday rush hours)

Best time to exercise: 6-8PM (body temp highest, peak time for strength and flexibility)

Best time to have sex: 10PM-1AM (skin sensitivity is highest in late evening)

All are from Mark Di Vincenzo's Buy Ketchup in May and Fly at Noon: A Guide to the Best Time to Buy This, Do That and Go There."

On a related note,

Here is the answer to whether marriage kills sex drive. 

Here's the answer to whether grandmom had premarital sex.

Here's why you don't need to worry about a terrorist incident next time you fly.

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