Falling down the stairs, leaving the gas on.....

I ran down the stairs with the 'phone, Jo was gardening out the front, and fell over something (me?), and scraped my knee on the carpet at the bottom. I've only lost a layer or three of skin, and no blood escaped. My right ankle is stiff, but not badly damaged. Later I was told off for leaving the gas on after cooking some lunch. First day back at work blues? or am I just getting old?