A 59 year-old (prakriti vata-pitta) corporate executive male comes to you seeking optimal health. On your evaluation, you notice he has a reddened complexion, his skin is warm to touch, and his waist circumference is increased at 111 cm. He mentions a very stressful job, with demanding hours, which leads to a poor diet. He also shares that lying on his back and taking deep breaths helps when his stress is very high. What herb are you most likely to incorporate in the formula?