I gave up caffeine last summer. Caffeine can have all sorts of effects on the body, both positive and negative. It can increase your alertness, give you an energy boost and even help your sporting performance. On the other hand it can make your heart race, give you heartburn and irritate your bladder. It’s addictive and without it you can find yourself feeling irritable, drowsy and with a banging headache. Personally I decided to give it up because I was getting a few symptoms that I thought might be caffeine related and I felt drinking it had become a habit that I just didn’t need. Since I started working from home, going to the kettle had become my break from my desk and I’d slowly increased up to five or six cups of tea a day. I only drink coffee once or twice a week. How much caffeine there is in tea varies according to the type of tea and how long you have brewed it for but there are about 70mg of caffeine in …