Migraine is experienced as a pulsatile, pounding or throbbing headache. Every heartbeat increases the headaches, thus the pain severity changes in waves. During an attack, the headache is so severe that that work and leisure time activities are only partially possible, if at all. Physical activities such as climbing stairs or carrying a suitcase aggravate the headache. The pain severity is not affected by physical activity with tension-type headaches. While bed rest is often necessary during a migraine attack, physical activity such as running or taking a walk can often alleviate the pain of tension-type headaches, sometimes significantly.