1) Every Shark Tank contestant is required to meet with an on-set psychologist after filming their segment. "They have to make sure we haven't scarred them for life," Mark Cuban says.

2) Not every deal that gets made on the show actually ends up happening. Any offer a Shark makes while shooting is not considered official. According to Daymond John, about one in five deals fall through after filming.

3) Sometimes the Sharks will pull out of a deal after learning that the contestant lied about their company's finances during their pitch.

4) But according to Mark Cuban, it's usually the contestants who back out of the deals: “I’d say 90 percent of the time, the entrepreneur changed the deal. It was not us backing out.”

5) The Sharks wear hidden earpieces while filming. If a contestant has a particularly emotional or unusual backstory, producers will secretly prompt a Shark to ask them about it.

6) But Mark Cuban says he doesn't particularly enjoy the backstories: "I hate the backstory...because it's usually a way to hide the realities of the business."

7) The most successful product in Shark Tank history is the Scrub Daddy, which has raked in over $75 million and sold more than 10 million units. On the show, Lori Greiner purchased 20% of the company for $200,000.