Technically speaking, our emotions are neuro-hormonal reactions occurring in response to some physical or mental stimulus, which in turn, affect our response to the same stimulus on the physical and mental plane. This may sound like a very unromantic explanation, but it is a fact. Emotions do not come from our heart, they are generated in our brain. All the emotions we feel – love, joy, hate, anger, sorrow etc. are nothing but some primitive algorithms that are processed to generate response on the physical and mental level.
You’ve probably come across all kinds of cleansing and detox programs online. There is a whole industry based around selling these plans and supplies to people trying to live healthier. Unfortunately, doctors largely agree that most of these plans have no real health benefits. They might even be harmful. It's best to skip them and follow a healthier lifestyle instead.