Stamina Hourglass Balls
As I mentioned in the case of stability balls, stamina hourglass balls serve the same purpose as balance balls, yoga balls and Swiss balls. All are in the big happy rubber ball family.
Both the stability ball and hourglass ball are used to improve your body's core strength. A person who has a good control over their core stabilizing muscles which consists of their hip flexors, back extensors and hamstrings has better control of their center of gravity or balance. For men, their center of gravity is located at the navel. A woman's center or gravity is located just below her navel.
Athletes and weight lifters all aspire to have strong cores so they can maintain better posture and balance while lifting weights, running, performing competitive sports that have them reacting (starting and stopping quickly) and even doing simple tasks such as walking.
However, there is one major difference between round and hourglass balls shape! You see, hourglass balls are designed with a larger surface area hence their longer pill-like design. This offers a stable surface area of 54-centimeters, a good 5 extra centimeters compared to a round stability ball.
Hourglass balls are typically softer than regular stability balls, so I'd recommend them for beginners. The hardness of your ball is up to you, but keep in mind that the more you inflate it, the harder the ball will be which means the more difficult it will be to keep the ball stable while you exercise.
Hourglass balls are the perfect shape for beginners and those with weak or bad backs. The softer ball will mean wider surface area coverage as the ball rests on the floor (so it will roll around less with you on top of it). In addition a longer ball will mean a more supportive surface area to support your body. Once you've master the hourglass ball you can inflate it with more air. Then once you mastered the harder hourglass ball you can move onto a round stability ball.
