Measure the waistband from one side to the other. For most jeans the sizing is still based on your waist measurement, unless stated otherwise. To get accurate measurements, smooth out the jeans flat on the surface. See waist sizes for a best selling jean. I wear a size 16 in jeans.
When you are considering the potential benefits of products look for meta-analysis studies that take in all the sound research available. One-off studies that get a significant result are not evidence of anything.
Only when an effect is repeated in many studies by many scientists should you believe.
Waist: Measure flat across the back waistband from one side to the other with the natural dip. Double the number to get actual waist size. Inseam: Measure from the crotch seam to the bottom of the leg on the inside seam. Outseam: Measure from the bottom of the leg to the upper edge of the waistband. To measure your jeans size using an existing pair of pants, use a measuring tape. The width of the jeans is measured at the upper corner of the pants waistband from left to right. To measure the length of the jeans, the measuring tape is placed on the inner seam of the jeans leg, from groin to the bottom. WAIST: For measuring the waist first button the jeans up. Next spread the jeans flat on the surface, and remove any fullness and wrinkles from it. Next spread the jeans flat on the surface, and remove any fullness and wrinkles from it.