How to avoid jet lag

http://news.bbc.co.uk/2/hi/health/7414437.stm

"So, in this case, simply avoiding any food on the plane, and then eating as
soon as you land, should help you to adjust and avoid some of the uncomfortable
feelings of jet lag."

It's a interesting research, but I really like relax time in air plane, such as having meal, watching movies, drinking beer and so on, so maybe I can't follow this advice...