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This is a representational image. Reuters

A California man recorded a bizarre video showing his painful muscle cramps with "alien-like" movement inside his legs. Angel Bermudez recorded the 50-second video after he suffered from the cramps post workout.

The video, posted on Facebook, shows something moving inside the man's leg muscles as he grunts and moans. The cramps began in his leg right after he left the gym and sat in his car. The video has been viewed more than 14 million times and has received more than 170,000 shares.

"After the workout. Start to relax and then this happens. F----- cramp. Look at this s---. Painful yes it was," he captioned the video. “Looked like a god damn alien in my damn leg was gonna bust out,” he added.

Facebook users freaked out after seeing the video with some suggesting remedies to cure the cramps.

"That's why you always gotta stretch and drink a lot and I mean a lot of water bro. But besides that, HOLY S---!" one user commented on the video. "I am freaked out by watching that I get them pretty regular where u can see a knot in my calf but that is crazy .. your leg is going to be sore for days .. btw I'm sharing lol," wrote another.

"Stretches, lots of water and a banana or two....lol. that is one flipping crazy set of cramping muscles..wowza!!!" Dree Avalos wrote in the comments section. Some users also posted GIFs to express their shock after watching the video and sympathized with the man for undergoing such "horrible" pain.

Disclaimer: Video contains offensive language.

"A muscle cramp is a strong, painful contraction or tightening of a muscle that comes on suddenly and lasts from a few seconds to several minutes," according to WebMD.

There are several reasons that can cause muscle cramps, including exercising, injury, or overuse of muscles, or exposure to cold temperatures, medical conditions, such as blood flow problems, kidney disease, thyroid disease, and multiple sclerosis, or potassium, calcium, and other mineral deficiency in the blood. Dehydration also sometimes causes muscle cramps.

Below are few tips to stop a muscle cramp.

1. Stretch and massage your muscles that have been affected by the cramps.

2. Take shower with warm water to relax the muscle or place a heating pad on the muscle.

3. Try using an ice or cold pack along with a cloth to be kept between the skin and the ice pack.

4. According to WebMD, some medicines that can be taken to relieve the pain include acetaminophen(Tylenol), ibuprofen (Advil, Motrin), or naproxen (Aleve).

5. Drink plenty of water or consume vitamin drinks such as Gatorade that help ease leg cramps.

If none of the above methods prove to be helpful, one should seek medical help.