However, if you increase the demands you are placing on your body by increasing the weight being lifted, lifting the same weight for additional reps, or just doing something that increases the demands that your body needs to meet, then your body will have no other choice but to make the changes and improvements necessary for it to adapt to this environment and remain capable of performing these tasks.
Anytime you breathe in, just know your diaphragm is contracting. HOLD THIS position as long as possible. You want to hold it, so you strengthen the muscle in this range. Soon, you will feel the need to let the air out. DO NOT QUICK RELEASE the air. Allow the air to come out slowly until you reach the bottom. The bottom mean, when the diaphragm is fully relaxed. At this point, TRY AND HOLD IT AS WELL. You don’t have to, but it’s good to train in the stretched position as well. DO NOT SUCK IN AIR quickly because you feel like you’re going to die, try and control the breathing back to the top and then resume back to normal strokes. Do this over and over. Start with 5min.
Remember my special answer: here it is… MOUTHTAPERS exist. People out there will tape their mouth closed during sleep so that they can breathe their nose. Even during the day sometimes. Why? Because the nose is directly connected to the diaphragm while the mouth is connected to the chest. Sure, increase chest mobility and your lungs may be able to expand more which will allow more air to be held, BUT HOW CAN YOU HOLD THAT MORE AIR IF YOUR DIAPHRAGM is weak? You won’t. So everything I just talked about must be done through the nose. Notice yourself breathing with your mouth and SWITCH right away. It takes work and energy. How you breathe during the day rolls over to how you breathe during the night.