A tennis ball can actually be used to alleviate the uncomfortable or painful side-effects of flying, such as joint pain and muscle aches. During a flight, it is common for our feet to swell and for the soles of our feet and backs to ache.

Surgeon Ali Ghoz, from the London Orthopedic Clinic, told The Daily Star that the solution is to press a tennis ball into the sore or tense areas when onboard. You can use the ball to massage these uncomfortable areas until they loosen and soften with the added pressure.

"By taking a tennis ball or a massager on the plane this will help increase circulation," Ghoz says. Also, if you stroke your muscles from the ankles upwards, this will get the blood flowing back to your heart.

To maximize comfort, it is also a good idea to take regular walks, keep hydrated and wear comfortable shoes. Before your next trip, remember to add that small, yellow ball to your packing list.