Meditation is one of the best practices a person can engage in to improve their physical and emotional health. When approached willingly and for pure reasons meditation heals people of many wounds. Studies show that it is one of the key ingredients of anti-aging and allows those engaging in the practice to regrow their telomeres, and hence protect their DNA from damage. However there are times when you should refrain from meditating and prioritise other methods for getting yourself back into balance.
Meditation tends to help you release old pent up emotions and to gain clarity. However if you find yourself in an already vulnerable state and you start to release/feel old traumas too quickly, meditation may do you more harm than good. Pace yourself. Energetic detox can be similar to physical detox and you can poison yourself through inexperience by releasing painful emotions too rapidly.
Do not meditate when you are experiencing intense thirst or hunger. You should first settle your belly with a light warm drink. Your goal is not to get lightheaded and disconnect from your body. Nor should you engage in meditation when your stomach is full with a heavy meal that takes a lot of energy to digest. The heavy meal will ground you and will make it very difficult to raise your awareness past a certain point.
Most importantly you want to make sure that you are either engaging in meditation in nature, or have charged yourself through nature recently in order to replenish your energy reserves through the earth, sun and prana. Think of it this way, no matter how well you free up space on your computer and clear its hard drive, if you forget to plug it in properly, it is going to run out of battery (just like you). In some cases taking a bare foot walk will do you more good than meditating in your apartment.
For me meditating is about healing back into wholeness. It is about achieving a state of flow with myself and nature and feeling bliss. For other people similar results may be attained while engaging in sports, art, or even a conversation with a friend. If you feel that meditation is not for you at this moment in time, you should not force yourself to do it.