how to inject b12 Injections at Home - Safety Guide for Self-Administration Benefits of Vitamin B12 Injections
Description
For a healthy person eating meat, dairy or fortified plant foods, the NHS view is that you do not need B12 injections

doi: 10.4021/jem.v3i1-2.157 85 Metabolic Pharmaceuticals Limited

This will involve 10-20 seconds to prep the injection site with an alcohol swab

Stubborn fat is usually about: genetics and fat distribution, hormones and insulin dynamics, training stimulus, total deficit consistency over time
If you are B12 deficient, correcting that deficiency whether through injections or oral supplements can significantly improve energy levels