 You know, there's lots of different things we can do to measure heat stress in our dairy herd, but probably the simplest thing that we can do is just look at breaths per minute. I really would encourage you to evaluate the breaths per minute in your herd various places in the morning, like at 6 a.m. to 7 a.m., and then again in the evening, 6 p.m. to 7 p.m.