Even with a fast digesting protein such as whey, it can take hours for the leucine in whey to be liberated from the protein & enter circulation; therefore leucine concentrations in the plasma never spike to high levels.
Rating Newest Oldest. Best Answer: The absolute minimum age for flying alone on major airlines in 5 years old. Passengers who are ages 5-14 and are flying alone (without a companion who is at least 15 years of age) are considered Unaccompanied Minors (UM's). Passengers whose ages range from 15-17 are considered Young Adults and do not have to use the UM service, but can if they would like to.
None of the major carriers will allow children younger than 5 years of age to fly by themselves. If your child is between 5 and 11, most airlines will allow him or her to fly alone as an unaccompanied minor, ironically accompanied by an extra fee for the ticket -- for example, $100 each way on American Airlines.any airlines, like Southwest, will also not allow unaccompanied minors on any flight that requires passengers to change planes, so young children may need to take direct flights. Children 12 to 17 years of age are free to fly like adults on most airlines.