Hugging seat with thighs downhill? (self.MTB)

I am a beginner biking mostly on non-technical road/trails. Still, I started to slowly go downhill on a rocky trail. I do put my saddle down, and try to put my weight back. Strange thing: I noticed that I tend to squeeze front part of the saddle with my tights which keeps me more "glued" to the bike. Is this something I should avoid as a bad habit?