Mountain biking is a fantastic cardio workout!
Not only is it an amazing workout, its a wonderful way to hit trails and see sights.
Many people do not realize there are great mountain biking trails right near downtown Los Angeles. Where do you like to ride?
I like to ride in Washington, Oregon and Colorado. Many people dont know that there is skiing near downtown Los Angeles
An easier but beautiful trail ride is from Estes Park to Grand Lake in Colorado. 
That trail is seasonal and just opened today! Its supposed to be so beautiful
Yes! You are riding above the treeline for nearly eleven miles!
That is on my bucket list, its a way to see scenery like none other. Just have to prepare so well for it.
Yes, if you do not prepare you could suffer from acute mountain sickness.
Not just that, dehydration and cramps and other variables that can make the trip difficult for unprepared biker.s