"If it's your job to eat a frog, it's best to do it first thing in the morning. And if it's your job to eat two frogs, it's best to eat the biggest one first." Mark Twain
For the thin skinned, Kapha in the morning gives us strength and density to be fearless. If you find yourself avoiding things, or skittish, but needing to confront a situation, then choose the morning time. The afternoon is the Vata time of the day and the energy becomes more fragile and thinner as the day wears on.