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Anonymous
>>460662 You can't fully exhaust yourself at a "decent pace." Also, you don't do the interval for four minutes; you do them until you can't do them any longer. You keep going until you're gasping for air and your max-effort sprints are barely jogs.
>>460665 Well, if you're going to be running, and you've never really ran before, expect lots of cramping. If for some reason you suspect your body might not be able to handle it, consult a doctor first, but that's really only for special cases. How you do HIIT doesn't matter; Tabata is just a specific set of intervals; do whatever works for you. Though, 30/30 splits are generally recommended for beginners, but as long as you're winded after doing it, the actual interval breakdown doesn't really matter.
As for lifting gains (sit ups are crap; they wreck your back and don't actually work your abs), HIIT may effect them. I'm not sure of specific correlation, but better endurance and general cardiovascular health can't hurt you.
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