Phase angle

The angle between resistance and reactance as a small current passes through you. Unlike every mass on the sheet, it is measured directly rather than calculated.

It reflects how intact and well hydrated your cell membranes are, and it is one of the few bioimpedance numbers with real prognostic weight in illness.

Here a higher value reads better. Most healthy adults sit between about 5 and 7 degrees, higher in trained men and lower with age, but the band depends on the device and the frequency it uses, so compare only within one machine.

Worth mentioning a steady fall, particularly alongside losing muscle or weight.