Biohacking is a pretty broad term as its definition varies from biohacker to biohacker. Many biohackers use it to optimise their overall well-being — think improved physical ability, cognitive function, and mental health.
Biohacking doesn’t equate to biotechnology — you don’t need expensive, high-tech gadgets to achieve self-improvement.
On top of that, biohacking isn’t anything illegal, particularly when it comes to self-experimentations. It also isn’t complicated, since much of biohacking is in the form of simple lifestyle changes.