@ErikUden When I've made cookies like this I make them to have about 20 mg of THC so a 1/4 cookie would have just 5 mg.
If I am playing music, dancing, or playing in the water -- swimming, kayaking or sailing -- I enjoy about 1 puff of a joint or maybe 1/2 of a cookie. At that amount I do not feel very high at all but instead just feel very connected to my body, the rhythm of my movements and the connection with the water and my friends.