My advice is that if it feels good, do it. If you find you're running low on energy then tweak by getting more sleep, adding more carbs, or build up slowly to the extra cardio rather than suddenly add 4 new cardio workouts/week. Just pay attention to your body and don't push too hard, too fast. I'll just bet you find you're a LOT hungrier too!!!

After 4 wks of BFL Richard and I started playing tennis 3 nights a week. I noticed that I was feeling more tired because of it. I didn't want to give up the tennis, so I try to get more sleep and I've added some protein and calories.....'cause I'm "starving" all the time now!! But I'm having fun and feeling good. Ain't life grand??