Are you/were you still able to carry your four/five year old to bed if they fall(fell) asleep on your lap?

Now when my daughter was five, she was about 36 or 37 inches tall, and about 40lbs. I was still able to pick her up and tote her to bed if she fell asleep while snuggling me and watching cartoons. My son is a whole different matter. He's about 46 inches tall(I think...He's about up to my now almost 9 year old daughter's shoulder) and about 55lbs(SOLID...not pudgy at all...VERY physically active. I can hardly keep him still when he's ill!) He fell asleep on my lap this evening and though I can pick him up, I worry about carrying him up a flight of stairs because my balance isn't superb. I felt bad having to wake him up enough for him to hobble up the stairs in his half-asleep state.