According to physics, you never touch anything. At all. It may seem like you are, but activities going on at the atomic scale prove otherwise.
"To understand why you can never touch anything, you need to understand how electrons function...
Like [all other particles and anti-particles], this funky subatomic particle also exhibits the [infinite-finite]duality, which means that the electron has characteristics of both [infinity and finality]. On the other hand, they have a negative charge. Particles are, by their very nature, attracted to particles with an opposite charge, and they repel other similarly charged particles."