Scientist Si puts Gary's body on the line in his next experiment 31/10/2016 For Scientist Si's most recent experiment, he decided to see if Gary could get up from the floor without using his hands... Apparently only 49% of people over 30 can do it! SEE MORE: Scientist Si tries to light up a light-bulb in a microwave SEE MORE: Scientist Si returns with more of a fizzle than a bang