It's all relative..but wow

A calorie is a unit of energy. 3500 calories is equal to 1 pound of body weight. This is why to lose weight we need to take in less than we burn so we burn what is stored. When I started exercising I would come close to death and only burn 200 calories on the treadmill. So I quickly began to look at what I was putting in my mouth. So today I did this little equation
There are 3.4 calories in 1 Plain M&M Candy 17.6 Football Fields in a mile. If you walked a 26 minute mile you would burn 9.15 Calories in walking 1 football field. So are 3 M&M's worth a football field? When my friend Melissa runs a Marathon she burns 4500 calories. That is 26.2 miles in 5 hours of constant running. Thats 11:45 minutes a mile and 173 calories a mile. Yesterday I burned 570 calories on 2.87 miles walk/run and a 1 mile bike ride. I haven't been on a bike in years. Today I am sore, very sore! This information is nothing new to most people but it was a huge eye opener to me. The other day I was talking to a friend during our morning workout and she didn't know that a pound was 3500 calories. Today I saw the calorie value of an m&m and it made me think. Funny how my thoughts have changed. However if this is old news to you please forgive the redundancy. I am still trying to wrap my mind around how it takes me 3 grueling miles of sweat and agony to burn off the equivalent to a piece of chocolate cake. I hope you look at a football field and M&M's differently. LoL
Keep moving