So yesterday I biked for 20 miles, played soccer for one hour and then walked for 3 hours just before I went to bed. As you might understand I just hit the sack and fell asleep almost immidietely. Usually I wake up in the middle of the night with a dream or 2 fresh in mind. Today woke up in the morning and couldnt remember 1 single thing. This is the first time this has happend in a week. I know exercise helps me sleep better but does too much physical activity reduce the chance of remembering dreams/getting lucids?