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- I'm a Fish!
because this should have been mentioned but hasn't.
What do your dive buddies/instructor look like? As a somewhat large male who's in good shape, I can personally guarantee you that your female instructor will ALWAYS have more are than you at the end of the dive. She doesn't need as much air to begin with so she won't use it. I have a rather good SAC for my size, 6'4" 285, muscle. It's .5-.6 kicking and .4 at deco. That's about average with everyone else, but my tiny better half has .35 kicking and .2 at deco. She just doesn't need the air.
Now, you're a soccer player. You're power is in your legs. That's great, except for the fact that those muscles are used to getting as much O2 as they damn well please when you're running. You're now underwater and your body wants to give them the same amount of O2 they usually get at the surface, so you breathe somewhat faster. It's normal, you can't really help it. You can try to breathe slower, breathe deep, etc, and it will help, but your RMV is likely higher than theirs at the surface. One of my dive buddies is a Navy EOD diver and he has a .5 deco and a .75-.8 kick. He doesn't have an ounce of fat on him and is in phenomenal shape, it's just how his body works. You will find yours start to creep down with experience, but don't focus on it
What do your dive buddies/instructor look like? As a somewhat large male who's in good shape, I can personally guarantee you that your female instructor will ALWAYS have more are than you at the end of the dive. She doesn't need as much air to begin with so she won't use it. I have a rather good SAC for my size, 6'4" 285, muscle. It's .5-.6 kicking and .4 at deco. That's about average with everyone else, but my tiny better half has .35 kicking and .2 at deco. She just doesn't need the air.
Now, you're a soccer player. You're power is in your legs. That's great, except for the fact that those muscles are used to getting as much O2 as they damn well please when you're running. You're now underwater and your body wants to give them the same amount of O2 they usually get at the surface, so you breathe somewhat faster. It's normal, you can't really help it. You can try to breathe slower, breathe deep, etc, and it will help, but your RMV is likely higher than theirs at the surface. One of my dive buddies is a Navy EOD diver and he has a .5 deco and a .75-.8 kick. He doesn't have an ounce of fat on him and is in phenomenal shape, it's just how his body works. You will find yours start to creep down with experience, but don't focus on it