What kind of cardio exercise can i do thats even more effective than running on the soft sand of a beach?

BeccaB questioned:

I run extremely near everyday, so I’m apprehensive including the intention of my body force get ancient to in succession so I won’t burn as many calories as I did as I started to run. So what other cardio excercises burn as many calories and get you in excellent affect including the intention of I can do. I want to get in affect for summer!