body

1. Origins, structure, and basic meaning

• Structure: 体 denotes the body; the independent word 体 is read からだ.
• Basic usage: 体が重い can describe the body feeling heavy or sluggish.

2. Common pitfalls and similar expressions

• Compound reading
  • 体育 is read たいいく. It combines たい and いく, so both occurrences of い belong in the written reading.
• A heavy-feeling body
  • 体が重い can describe tiredness or sluggishness, so it does not refer only to gaining weight.