Originally Posted by
blcknspo0ln
You know, rereading the OP's original question of if cross training benefits him exclusively as a cyclist, I will take my comment back. Although I do stand adamant that cross-training in multiple fitness realms adds value to the healthiness of an individual overall vs. strictly cycling.
I would put emphasis on "in multiple fitness realms." Running and cycling are not multiple fitness realms. Cycling and strength training for your legs are, but there are many studies showing that trying to cross-train the same muscle group for strength and endurance at the same time is very tricky and potentially futile (there is a substantial risk of "interference" where different types of training inhibit each other).
The best and safest kind of cross training is endurance cycling and core & upper body strength training.