 Repetitive diving occurs when two dives are separated by a short surface interval, during which the diver has not completely outgassed from the first dive.The gas loading from the first dive must then be taken into account when determining no stop times and decompression requirements for the second dive.Multiple decompressions per day over multiple days can increase the risk of decompression sickness because of the buildup of asymptomatic bubbles, which reduce the rate of off-gassing and are not accounted for in most decompression algorithms.