>> I GOT TO LOOK CLOSER? OKAY. WELL, DR. ASHTON, WE HAVE SOME -- A QUESTION HERE. THIS WAS A BIZARRE QUESTION TO ME, A LITTLE BIT. SOMEONE SAYING, I HATE DRINKING WATER. WHAT ARE SOME TIPS TO GET ME TO LIKE IT? >> SO, THIS IS ACTUALLY GJEN W. IT COULD BE JEN ASHTON. I'M WITH HER. A LOT OF PEOPLE FEEL THIS WAY AND THEY KNOW IT'S IMPORTANT FOR HYDRATION. TWO AND A HALF LITERS A DAY FOR WOMEN IS ROUGHLY WHAT'S RECOMMENDED. THREE AND A HALF LITERS A DAY FOR MEN. SO, SOME TIPS THAT I HAVE ACTUALLY TESTED MYSELF AND AN N OF 1, AS WE SAY IN SCIENCE. PLAY WITH THE TEMPERATURES. SOME PEOPLE LIKE ICE COLD WATER. SOME PEOPLE LIKE ROOM TEMPERATURE. YOU CAN SPRITZ A LITTLE CITRUS IN IT TO GIVE IT A LITTLE BIT OF FLAVOR. YOU DON'T WANT TO BE ADDING ANYTHING WITH CALORIES. OR YOU CAN USE SOMETHING THAT LITERALLY KEEPS TRACK OF IT FOR YOU AND JUST MAKE IT A MENTAL CHALLENGE. YOU'VE SEEN HIM WITH MY THING WITH ALL THE LINES TO IT. THOSE ARE REALLY POPULAR, VERY EASY FOR PEOPLE TO USE. >> IS THERE A HYDRATING ALTERNATIVE TO WATER? >> I MEAN, LISTEN, YOU GET WATER IN YOUR FOOD, RIGHT? FRUITS, VEGETABLES, BUT NOT ENOUGH -- YOU REALLY DO NEED TO DRINK IT. >> AND THE SPORTS DRINKS AND ALL THAT HAVE TOO MUCH EXTRA STUFF. >> YEAH. >> YOUR PRESCRIPTION FOR WELLNESS FOR TODAY. >> SOME TIPS OR WAYS TO GET SOME CARDIO IN THAT ARE NOT WEIGHT BEARING. YOU KNOW, YOU AND AMY JUST FINISHED A RECENT MARATHON. RUNNING, OBVIOUSLY, WALKING, ARE GREAT WAYS TO GET CARDIO. BUT SOME -- >> THAT'S TOUGH ON THE JOINTS. >> THAT'S RIGHT. AND IN YOUR CASE, THE FEET, AS YOU'VE TOLD ME. BUT OTHER OPTIONS. STATIONARY BICYCLES, WHETHER YOU HAVE ONE AT HOME OR WHETHER YOU CAN USE ONE AT A FITNESS CENTER. WATER AEROBICS OR SWIMMING, SO, SO GOOD FOR CARDIO. YOU'RE NOT GETTING THE POSITIVE STRESS ON YOUR MUSCULOSKELETAL SYSTEM, BUT YOU'RE GIVING YOUR JOINTS A BREAK. STAIR CLIMBING. HERE IN THE STUDIO, I CANNOT WALK UP THOSE STAIRS. I'VE BEEN DOING IT FOR 11 YEARS, WITHOUT BEING OUT OF BREATH. NOT GOOD. >> STAIR CLIMBING, IS IT THAT TOUGH ON YOUR -- >> IT'S NOT. IT'S NOT. BUT IT DOES GIVE YOU GOOD CARDIO. YOU'RE NOT SLAMMING YOUR JOINTS. >> THAT MAKES SENSE. ALL RIGHT, DR. ASHTON,