Lonnie is a sailor on a submarine. As a result of this type of environment, Lonnie often experiences a free-running circadian rhythm that is More than 24 hours due to nature of sailor job lead them to what is term entrainment, this is a deviant in the normal running cycle of the circadian rhythm due to the interplay of sleep and waking cycles.
Exposure to sunlight helps en-train the internal biological clock to the rotation of the earth.
sailor on a submarine experience free-running circadian rhythm that is More than 24 hours which lead to the develop of shift maladaptaion syndrome.
