The most common and most likely answer to this crossword clue is the 5 letter word SPASM
S
P
A
S
M
More clues leading to the result SPASM
- Mark goes to health resorts for muscular problem
- Fit madam supporting hydros
- Fit father's engaged in kinky sex?
- Fit and well — antismoker at heart
- Brief time that Dad’s into bondage
- Unnatural movement caused by sulphur in processed meat
- Sergeant Major joining health resort to get fit
- Hiccup, e.g. what’s unwelcome on computer, section inside
- Jerk from Sweden involved in unsolicited emails
- Resort’s opening in May for brief period
Buddy explains!

The straight part
We know that "muscular problem" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case muscular problem = spasm.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SPASM mean?
SPASM noun- A sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ.
- A violent, excruciating seizure of pain.
- A sudden and temporary burst of energy, activity, or emotion.
- To produce and undergo a spasm.