Yes, performing an excessive amount of cardio throughout the week is certainly not recommended during a bulk, as it definitely can impede muscle recovery and growth if you go too far. For example, if you performed an intense leg workout and were feeling beat up and sore in the days that followed, a low to moderate intensity walk on the treadmill could help out. Again, just a handful of thirty-minute cardio sessions every week will do wonders for your performance and body. Unless you’re absolutely hammering your body with tons of cardio volume every week, you’re likely to see only good results when you start implementing it into your routine. If you don’t get stronger in the gym, you won’t have a very successful bulk — even if you’re eating perfectly.

Many people complain about how difficult it is to eat multiple meals in a day, it is a case with you as well? “Training for hypertrophy requires causing ‘metabolic damage’ to muscle cells and then refueling them with a surplus of amino acids and calories to lay down new muscle tissue,” Worthington said. “Gym bro” culture says that cardio is to be avoided, lest it “kill your gains,” but this isn’t true.

But bulking is not as easy as it looks, it demands a lot of hard work and right guidance. Some research suggests that cycling is better than running for preserving muscle — but ultimately there’s no such thing as a perfect training regimen, because we’re all different. Aerobic training puts a lot of strain on your lungs and heart. You try to get as much oxygen into and out of your system as possible. You’ll be able to significantly improve their functionality with only a little practice.

Cardio causes a different type of adaptation from hypertrophy training. Instead of stimulating muscle growth, cardio causes us to develop more blood vessels, gain additional mitochondria in our cells, and it even increases the size of our hearts. A moderate amount of cardio exercise will help you stay lean while you bulk, and it’s good for your health, so plan to include a few cardio sessions per week. The only exception is if you’re a beginner weightlifter who has problems putting on muscle mass. In that case you may want to lay off cardio for the first couple months of your training program.

Even if you can manage to eat enough calories to gain weight, you’ll run into something called the interference effect. Essentially, if you train for a marathon and a powerlifting meet at the same time, those signals will start to cancel each other out. After all, you’re training for extreme endurance and extreme fidelityexpress strength. You’re training for adaptations that are at opposite ends of the strength-endurance continuum. If you want to increase the size of your muscles, no amount of cardio will help. So if we’re trying to build muscle, we need to focus on hypertrophy training, which is usually done by lifting weights.