Feeling, sight, smell, hearing and taste are all human senses. Can be used as a copula, with similar usage. They are usually used in the continuous tense with can. Feeling is a sense of touch, feeling, experience and a certain state of the body. For example, touch a stone and throw a stone; Can you tell me what it is by falling (can you find out what it is? ); Or a certain feeling on my body, which comes from internal or external influences: I felt the earthquake. My right hand can't drop anything, and my left arm has lost consciousness. Cold, hunger, comfort, sadness ... can also be expressed as giving people an impression that the water feels warm (for me).
Commonly used collocations, phrases are
I fell down, as if I were going to get sick.
I want a drink. Want it.
Self-feeling: I feel energetic.
Have a strong understanding or appreciation of sth.
Free fall: Help yourself. Mostly used in spoken language.
Feeling good/bad: I feel very happy and confident/otherwise it is very bad.
As for fell well, it is mostly used in the body, indicating good health. Well is used here as an adjective and predicative, which means to be in good health. Well can also be used as an adverb, indicating good, satisfactory and gentle, such as doing well; I hope everything goes well; He is very kind to me.