I want to start bike riding more during the week but I can't make it out to the trails everyday. I will have to ride through the neighborhood mostly during the week. Will there be any harm to my mtb if I start riding it a lot on the road and on the trails? I have started mtb racing and want to make sure I take care of the mtb. Also, what is specific training I should focus on for racing when I can't practice on the trails? Thanks.