An envelope <a href=" http://levitrabuycheappurchase.com/generico-do-levitra-no-brasil.html ">levitra coupon card</a> Now that summer is in full swing, warm temperatures &ndash; and even an occasional heat wave like the one blanketing the East Coast this week &ndash; are par for the course. And while it's always important to stay hydrated, it's even more vital to meet daily fluid requirements when temperatures soar, especially if you're active.