Especially if you're not used to that amount of workload, you'll find yourself burned out or injured. An option is to split your workout: - Focusing on general conditioning in the morning: roadwork and strength/endurance training. - And focusing on developing boxing skills and any other boxing specific work in the afternoon: mitts, sparring, bag drills. The time in between will give you a chance to recover so you can work harder in each session. However, this may be time consuming considering the added travel and preparation time for each workout session that you decide to pile on your plate. As with anything, try to progress into your target workload and never just jump into all out 3 hour workout sessions if you decide to try it. Keep up the hard work during training, and good luck with meeting your goals. - vibit, aka "the-speedy-midget-minus-the-speed"