Practicing an instrument isnt the only way to improve how you play it. Take me for instance, my Piano teacher advised me to keep playing guitar to improve how i play the piano, as the fingers have to get used to moving quickly and develope physically as well. I play cello also which further adds to this. Although I have to admit my devotion to the guitar is much more intense.
'There's no such thing as bad weather, there's only the wrong clothes...'