BOGOTA -- Health officials in one Colombian coastal city have a controversial recommendation for residents trying to stay cool during an intense heat wave: Take a break from sex.

Santa Marta city health secretary Julio Salas sparked a mix of laughter and disbelief this week when he urged residents of the Caribbean tourist mecca to refrain from sex during the day as part of a list of recommendations, such as staying hydrated and wearing loose clothing to prevent overheating.

Sex is considered only a moderate physical activity, as much of a strain on the heart as walking up two flights of stairs, according to the American Heart Association.

Temperatures in Santa Marta have soared past 40 C and Salas says medical facilities in the city of 600,000 have been overwhelmed with patients complaining of symptoms of heat stroke such as nausea and headaches.