Just found the most intense exercise I've done in a long time! A killer exercise. Why a "killer" exercise?  I thought I was going to have a heart attack and DIE by the time I was done with several games. I played lazer tag with my daughter and grandkids tonight after two games of bowling. All the running, zigging and zagging, ducking and diving etc, I'd love to know how many calories I burned just by all the laughing alone . Who says exercise has to be boring (or age appropriate, LOL).? Thinking of making it a weekly event!