Interval training ie sprint/jog/sprint/jog.
800m training is good as well, they don't call it the man killer for no reason.
Heavy resistance training, ie really heavy weights, low reps, lift explosively but with good technique.
Good shadow sparring, making sure that you use good strong technique.
I'd also say, don't ride a bike unless you have brilliant flexibility, it builds up the muscles on the inside of the leg which prevent good flexibility. The same can be said of running, so make sure you are stretching well before and after your runs.
Important advices about the stretching to prevent losing flexibility.