It is essential for you to understand everything there is to know about testosterone supplementation; this way you are able to make decisions about the supplement that you will be using intelligently, as you are able to base consumption around the future. Different types of testosterone offer different types of response times for action, for example, here are some injectable Bodybuilding Supplements: – Aqueous testosterone solution – Rapid response times, begins working within hours.[2] Testosterone Cypionate – Relatively slow response times, begins to work within 8-10 days.[2] This allows you to regulate injection times by injecting once every week and eliminates the hassle of having to constantly focus on supplementation. Testosterone Enanthate – Similar to Cypionate, has the same response time and supplementation time.[2] Testosterone Propionate – Rapid response times, begins working on the body within 4 days and has to be administered at least twice a week to maintain blood levels.[2] This form is relatively unpopular due to a reported pain left by the injection.[2] By understanding the different forms of testosterone that are open for you to work with, you will have the ability to regulate work-out and supplementation times without the constant occurrence of hassle. You must also have an efficient knowledge about the different types of supplementation as this can vary in preference, some are; injections, dermal solutions (creams or gels)[3] and oral consumables(tablets and pills) – if you do not know enough about each specific method of supplementation you may be making an existent illness worse, for example – the pills or tablets are known to have a more significant effect on the liver, whilst the gel may affect an skin condition that you have.