Lube, lube, lube. Even with it, you can tear. If it hurts, not good hurt - stop.

And it is best not indulged in too often, HOWEVER much you like it - give your poor little sphinctre a chance to recover! Preferably, do exercises (squeeeeeeeze release) inbetween times, to help strengthen. Whether the other medical information given was biased or not, leakage is a genuine threat. You don't want that. No no no.