Where are the biceps muscles located?
AnswerThe front of the upper arm
The biceps brachii sits at the front of the upper arm and bends the elbow.
Fitness · Facts & stats
Fitness facts & stats
7 fact-checked facts about fitness and the science of exercise, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What does HIIT stand for?
AnswerHigh-intensity interval training
HIIT alternates short bursts of hard effort with periods of rest or easy movement.
Going deeper
What is the largest single muscle in the human body?
AnswerGluteus maximus
The gluteus maximus in the buttocks is the largest single muscle, powering hip extension.
What does VO2 max measure?
AnswerThe maximum rate the body can use oxygen during exercise
VO2 max is the highest rate of oxygen use during intense exercise, a key marker of aerobic capacity.
How many muscles make up the quadriceps?
Answer4
'Quadriceps' means four heads: rectus femoris, vastus lateralis, vastus medialis and vastus intermedius.
Expert level
In an isometric exercise, what happens to the working muscle?
AnswerIt contracts without changing length
Isometric holds like a plank or wall sit create tension without visible joint movement.
What is the stored form of glucose in muscles and the liver called?
AnswerGlycogen
The body stores glucose as glycogen in muscles and liver, drawing on it for energy during activity.
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