Can i have sex daily
definately, the more the merrier lol
wiki.answers.com/Q/Can_i_have_sex_daily

Can i do daily sex
Yes you can do daily sex but you would want to watch out for pains by having it to much but yes
wiki.answers.com/Q/Can_i_do_daily_sex

Can you have sex daily
Yes. It is done often. Many can even have sex several times each day.
wiki.answers.com/Q/Can_you_have_sex_daily

Is daily sex normal
Yes, as long as it doesn't interfere with work, family etc.
wiki.answers.com/Q/Is_daily_sex_normal

How many people have sex daily
1.8 billion people round the world have sex daily that is 24000 litres of sperms daily
wiki.answers.com/Q/How_many_people_have_sex_daily