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Scientists compared the workout performances of male athletes after they watched several types of video clips and found that male weightlifters can lift heavier objects after watching erotic videos.

Not only did watching porn boost subsequent squat performance in athletes, scientists also discovered changes in testosterone hormone levels in salivary samples obtained from participants, in line with the research published in the journal Hormones and Behavior.

Results from the study found that looking at different kinds of videos produced drastically different hormone levels in saliva.

While erotic, aggressive, funny, training and motivational video clips triggered a noticeable rise in testosterone, sad and neutral clips prompted a significant drop in salivary testosterone levels.

"We explored the acute effects of video clips on salivary testosterone and cortisol concentrations and subsequent voluntary squat performance in experienced male athletes," researchers wrote within the study.

Researchers collected saliva samples on six occasions immediately before and 15 minutes after participants watched a four-minute long clip.

After watching the short film, the male athletes were asked to perform a squat workout targeted at producing a 3 repetition maximum (3RM) lift.

Researchers noticed a substantial improvement in 3RM performances after participants watched erotic, aggressive and training clips compared to the control clips.

"In conclusion, different video clips were affiliated with different changes in salivary free hormone concentrations as well as the relative changes in testosterone closely mapped 3RM squat performance in a group of highly trained males," the authors wrote.

The recent study adds to the growing evidence that sex isn't going to impede and may actually enhance athletic performance.

For years coaches and athletes have followed that long-held theory that sex before competition zaps energy and have subsequently practiced abstinence the night or even weeks before competition.

On the flip side, many scientists are now stating that the long-standing "no sex before sport" myth has never been fully proven, explaining that most research examining the physiological effects of sex has so far not been able to adequately show that sex reduces physical strength, power or endurance.

Some experts state that sex before sport can help athletes since it wipes out mental fatigue and leaves athletes feeing refreshed and confident.

Researcher Professor Emmanuele Jannini, of the University of L'Aquila in Italy, found that sex stimulates the production of testosterone.

He told National Geographic that the current believing that sex diminishes performance "is a really wrong idea."

"After three months without sex, which isn't so uncommon for some athletes, testosterone dramatically drops to levels close to children's levels," Jannini said, based on the magazine. "Do you think this may be useful for a boxer?"

Besides indulging in porn before a trip to the gym, weightlifters may also improve their performance by doing more cardio exercise, consuming protein after a workout and avoiding over-working themselves.