"When you're stressed, there's a battle being fought inside you," Mangieri says. "The antioxidants and phytonutrients found in berries fight in your defense, helping improve your body's response to stress and fight stress-related free radicals." Research has also shown that blueberry eaters experience a boost in natural killer cells, "a type of white blood cell that plays a vital role in immunity, critical for countering stress," says Cynthia Sass, MPH, RD, Health's contributing nutrition editor.
When making an educated decision on what product is best for you, it is important to have a general understanding of how the technology works, and what the benefits are of visiting the specific brainwave states.  Please click the link to visit a more detailed article –  How Does Brainwave Entrainment  Work, and the benefits of Alpha, Theta, Delta, and Gamma brainwaves.
Different states of mind are associated with specific brainwave frequencies that would be inaudible if played directly. These frequencies can be induced in the brain indirectly by playing two different audible tones into each ear, which after being processed by the brain, are perceived as an inaudible beat matching the target brainwave frequency. As you listen, your own brainwaves fall into step with this inaudible beat, and after a few minutes synchronize with the target brainwave frequency. Brain Wave's 35 programs layer these binaural sequences into multi-stage sessions that have helped thousands of people focus and concentrate, feel positive and motivated, and sleep more soundly.
***NOTE: (Last one) Please do research on which brainwaves do what before just trying out the first track you find! Also read descriptions of what frequencies are being used in the track, so you know what you are training your brain to! (Example: You struggle with OCD and have some anxiety. You see a track titled “Clear, Focused Thinking” and you try it out w/o reading the description. You either do not experience anything or you end up with worse anxiety/headache than before. If you knew before starting, that your problems were caused by too much Beta wave activity in your brain and the track was all low Beta ramping up to high Beta – you would not listen to it!)
Escape from a stressful situation by remembering a favorite vacation spot or a place where you feel cozy and at home. “Make sure to take note of every detail of your favorite spot—the more detailed your visualization, the more stress gets kicked to the curb,” Dr. Serani says. “For me, it’s a beautiful spot on the beach in my native Long Island. But it’s not just the white velvet sand of the beach or the teal blue ocean water; it’s the sounds of the surf, the tang of the salt water, the feel of the sun, the waves in the distance, and the imagined walk I take along the water.” You can combine this with a three-word mantra like “blue-ocean-water,” Serani suggests. Miller calls the visualization of a memory that evokes a positive association an “anchor.” She remembers watching beautiful sunsets in Costa Rica. “Now that I am back in the hustle and bustle of life, I will often pause and take mini-retreats, bringing up the anchored experience of inner calm that I felt watching the sunsets,” she says.
First of all thank you for your amazing website, I have a question regarding these matters, I can make both binaural beats and isochronic tones for myself but I doubt for low frequencies states (Theta and Delta) which one is better? Because I searched a lot and saw that binaural beats are better for low frequencies and for high frequencies (Beta Gamma Lambda….) isochronic tones are more effective. Also, for Alpha states some said isochronic and other said binaural.
Proceedings of the 9th Conference on Interdisciplinary Musicology – CIM14. Berlin, Germany 2014 http://catarina.udlap.mx/u_dl_a/tales/documentos/lps/gomez_g_j/capitulo_1.html [14] Universidad Complutense de Madrid. (2006). Proyecto de apoyo a la evaluación psicológica clínica. Retrieved from http://pendientedemigracion.ucm.es/info/psclinic/evaluacion/Proyecto Apoyo EPC 2006/INSTRUMENTOS EVALUACION/TRASTORNOS DE ANSIEDAD/EVALUACION GENERAL DE LOS TRASTORNOS DE ANSIEDAD/ESCALA DE ANSIEDAD ESTADORASGO (STAI)/STAI_P.pdf [15] Universidad Complutense de Madrid. (2006). Proyecto de apoyo a la evaluación psicológica clínica. Retrieved from http://pendientedemigracion.ucm.es/info/psclinic/evaluacion/Proyecto Apoyo EPC 2006/INSTRUMENTOS EVALUACION/TRASTORNOS DE ANSIEDAD/EVALUACION GENERAL DE LOS TRASTORNOS DE ANSIEDAD/ESCALA DE ANSIEDAD ESTADORASGO (STAI)/STAI_F.pdf [16] Hassan, H., Murat, Z., Ross, V., & Buniyamin, N. (2012). A Preliminary Study on the Effects of Music on Human Brainwaves. International Conference on Control, Automation and Information Sciences (ICCAIS) [17] Johnson, J., Petsche, H., Richter, P., Von Stein, A., & Fiilz, O. (1996). The Dependence of Coherence Estimates of Spontaneous EEG on Gender and Music Training. University of California Press. Annexes: https://www.mediafire.com/?cayel53iabg620d
One benefit of increased Delta waves are the production of 2 anti-aging hormones: DHEA and melatonin. Capable of preventing you from looking well beyond your age, keeping your appearance youthful and exuberant, DHEA & melatonin are very import. In addition, delta brainwaves are said to suppress the production of cortisol, a hormone generated when a person is stressed. By keeping cortisol at bay, it is possible to slow down the aging process.
All you need to experiment with binaural beats is a binaural beat audio and a pair of headphones or earbuds. You can easily find audio files of binaural beats online, such as on YouTube, or you can purchase CDs or download audio files directly to your mp3 player or other device. As mentioned earlier, for a binaural beat to work, the two tones have to have frequencies of less than 1000 Hz, and the difference between the two tones can’t be more than 30 Hz.
However, Brain Wave, Tranquil Mind and Perfect Sleep are, by far, the best for me. Banzai Labs has done a good job. You can select any of a variety of binaural applications from Morning Coffee straight through 20 routines to Deep Sleep. I tried Power Nap for 20 minutes and dozed off. However, instead of being a little groggy or spaced when I awoke, I was alert and oriented. 

By exposing the brain to special computer generated tones that are pulsed at a specific rhythmic frequency, the brain will synchronize its own electrical impulses to that same frequency. This means the brain becomes "entrained", or matched, to the specific frequency of the pulses, which gives you the ability to choose the primary frequency you want to experience in your brain. By guiding the brain into deeper (slower) frequency brainwave patterns, you can induce a profoundly deep state of relaxation and meditation with almost no effort.
Brainwaves are the collective electrical signal of millions of neurons working together in a living brain, producing our sense of alertness – or lack thereof - and producing our experience of reality. As brainwaves change, so does our perception of the world and our inner perception of ourselves. By learning to control our brainwaves, we can achieve specific, desirable mental states, such as feeling more relaxed, less anxious, more creative, more focused, or sleepier.
This unique session works the opposite to most sessions. It attempts to  ‘dis-entrain’ the brain, breaking stuck thinking patterns and allowing a fresh way of thinking. The recording contains random and chaotic isochronic tones spanning 7.83 to 18 Hz, played over a background of gamma-embedded noise. Use this session to sit back and allow fresh ideas and new connections to form. Finishes at the illuminating14Hz sensorimotor rhythm frequency.