Tonic and Phasic Muscles

We have two categories of muscles in our body to keep us upright and functioning in gravity; tonic and phasic muscles. Tonic muscles stabilize the body. Phasic muscles are action muscles and use force when needed. Tonic muscles are slow twitch, meaning they can stay “on” for long periods of time. Tonic muscles are closer… Continue reading Tonic and Phasic Muscles