Changes in Their Noontime Routine

I noticed these days that the daily cycle or routine of my parents has change. During the past few months they always spend time with the television especially at noontime, they hookup with the noontime show WOWOWEE. But now, instead of staying awake at noontime after the meals, they prefer to go up stairs and took siesta. Due to the point that I don’t know why they do that and really wanted to know the reason behind, one time I asked mother why is it so. I gave her a very eager question but she replied me like this “Why should I watch a show that’s very boring at all?” Well, that’s it. I thought she was angry but with a high pitch voice she told me “I am not angry”.