Loving Earth chocolate has been tested by Southern Cross University and found to contain 3.1% caffeine. The stimulating effects of their chocolate can be attributed to the theobroma content, which has a similar energising effect to caffeine without the associated negative feelings. The properties of cacao mean that its unique natural chemicals can stimulate alertness and help control appetite. It also facilitates the release of sleep-inducing hormones such as serotonin and melatonin due to the presence of tryptophan.