20 days ago, I texted Becca telling her that it was all I could do to run .75 miles. Today, I ran 1.5 miles without stopping to walk, stretch, or take a break of any kind. I could have kept running, but decided to walk the remainder of my distance today as not to overwork my muscles and cool down.
In 20 days I more than doubled my muscle endurance.
Today, my body did something it wasn't even close to being able to do 3 weeks ago.
That is one of the best feelings in the world.