<span style="background-color: white; color: #333333; font-size: 13px; line-height: 18px; text-align: left;"><span style="font-family: Verdana, sans-serif;"><br /></span></span><br /><div class="separator" style="clear: both; text-align: center;"><a href="http://1.bp.blogspot.com/-68zb2_C0ZZI/T6kNQZkMUzI/AAAAAAAAQ9Y/RzlasHEzdy8/s1600/runningonsand.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="300" src="http://1.bp.blogspot.com/-68zb2_C0ZZI/T6kNQZkMUzI/AAAAAAAAQ9Y/RzlasHEzdy8/s400/runningonsand.jpg" width="400" /></a></div><span style="background-color: white; color: #333333; font-size: 13px; line-height: 18px; text-align: left;"><span style="font-family: Verdana, sans-serif;"><br /></span></span><br /><span style="background-color: white; color: #333333; font-size: 13px; line-height: 18px; text-align: left;"><span style="font-family: Verdana, sans-serif;">Running on sand can be great exercise, but be careful when transitioning from pavement. The added resistance takes some getting used to, and you can injure yourself if you add exertion without conditioning your legs to the new surface first. A friend of mine recently blew out his knee by sprinting on the beach without any prior experience doing so.</span></span><br /><span style="background-color: white; color: #333333; font-size: 13px; line-height: 18px; text-align: left;"><span style="font-family: Verdana, sans-serif;"><br /></span></span><br /><span style="background-color: white; font-size: 13px; line-height: 18px; text-align: left;"><span style="font-family: Verdana, sans-serif;"><span style="color: #333333;">Here's an </span><a href="http://www.therunningadvisor.com/running_on_sand.html"><span style="color: blue;">article on running on sand</span></a><span style="color: #333333;">. And </span><span style="color: blue;"><a href="http://www.livestrong.com/article/300590-calories-burned-running-on-sand/">another one</a> </span><span style="color: #333333;">that breaks down calories burned.&nbsp;</span></span></span>