When using bodyfat calipers, am I supposed to be relaxed or flexed when pinching. When I pinch the standard suprailiac site in relaxed state, the chart says I’m a sloppy 17% (!) bodyfat. If, however, I flex my abs and try again, I’m supposedly a more respectable 13%. Studies do indicate that bodyfat calipers are close in accuracy to underwater electrical impedance bodyfat measurement…if done properly! - Please advise!!!