Skin conductance and hand temperature are direct measures of the response to stress. Biofeedback therapy allows your clients to become aware of and learn to control undesired physiological changes caused by stress through self-regulation.
Heart rate variability
Heart rate variability (HRV) is an strong indicator of cardiovascular resilience. HRV biofeedback is a powerful tool, which can help your clients learn to use their breathing to strengthen their respiratory and cardiovascular systems.
Brainwaves are the reflection of changing mental states. Neurofeedback teaches your clients to voluntarily affect their dominant brainwave frequency in order to either improve focus and awareness or favor relaxation and sleep.