First riddle of the day!
What has a bottom at the top of them?

Does anyone have an answer to this question? if so me.

The dietary guidelines for americans recommend (a) avoiding smoking. (b) engaging in aerobic exercise for 60 minutes at least five days a week. (c) making all of your grain choices whole grains. (d) increasing your intake of fruits and vegetables.

Victoria enjoys laughing with her friends as they walk around the track after school which best describes her heart rate during this activity