Given that biofeedback may help train muscular strength, wouldn’t it be useful if such a technique could be used to train cognitive strength, or mental agility, based on brain activity? Whilst this may sound a little like science ﬁction, it is precisely what advocates of electroencephalographic (EEG) biofeedback, or neurofeedback, propose is possible. This chapter continues to explore the potential of biofeedback by extending the focus to include neurofeedback. The use of neurofeedback has risen dramatically in recent years, alongside claims that it can be used to enhance behaviour and/or cognition. Such training is thought to enable better mind management, facilitate enhanced self-awareness and improve mental performance, attention and memory, as well as enhance creative, athletic and academic performance (see Gruzelier et al. 2006; Vernon 2005, 2008; Vernon and Gruzelier 2008).