Chronic stress without regular and period experiences of renewal is non-sustainable for performance. We further examine the physiology of the PNS and SNS; including the relationship between stress and the activation of the SNS, and renewal and the activation of the PNS, including implications for hormonal and cardio-vascular activity in the body. We then turn to our neuroscience-based study of coaching; outlining the contagious effect of emotions, and the relationship between the brain's independent and suppresive Task Positive Network (TPN) and Default Mode Network, and how each relates to problem solving/analytical tasks and social tasks/openness to people and experiences. We end this week by outlining the ethical dimensions of coaching: the essentials of trust and environmental safety, awareness of boundaries, and ensuring that the coaching process flows from the coachee themselves.