The details will largely depend on your specific workout split (how many days you're currently training), as well as your specific goal. In general, adding two or three cardio sessions per week can be a good place to start. Begin with 15 to 20 minutes of low to moderate intensity work, either on a non-training day or performed immediately after your weight training. Avoid performing significant cardio training before a lifting session, which may negatively affect strength output for the resistance training to follow. (24) A brief warm-up is fine, but don't let five to 10 minutes on the bike turn into a full-blown 45-minute cardio workout.