Medically reviewed by M. Thurairaj, Registered physiotherapist. · Last reviewed June 2026.
What a cramp feels like
A cramp is a sudden, involuntary tightening of the muscle that can be intensely painful but typically eases within seconds to minutes, often relieved by gently stretching and relaxing the muscle. Afterwards the calf may feel a bit tender but usually recovers. Cramps can be linked to fatigue, heat and dehydration, and are common in our climate during hard exercise.
What a strain feels like
A calf strain is an actual overstretch or tear of the muscle fibres, often felt as a sudden sharp pain, sometimes like being struck or kicked in the calf, that does not simply pass like a cramp. It can come with tenderness, swelling, bruising or difficulty walking and pushing off. A strain needs to be respected and managed, not pushed through, and a significant one should be assessed.
Responding and recovering
For a cramp, gently stretch and relax the muscle, hydrate, and ease off; massage afterwards can soothe the lingering tightness. For a suspected strain, stop, avoid pushing through, and manage it sensibly with relative rest early on, getting a significant one assessed. Once a strain has settled, massage can ease surrounding tightness as you rebuild, but we avoid working on a fresh, acute strain.
Key takeaways
- A cramp passes quickly; a strain lingers
- Cramps link to fatigue, heat and dehydration
- A strain needs respect, not pushing through
- Massage helps after a strain settles, not when acute
Frequently asked questions
How do I know if it is a cramp or a strain?
A cramp eases within seconds to minutes with gentle stretching. A strain is a sharp pain that lingers, sometimes with swelling, bruising or trouble walking, and needs proper care.
When should a calf injury be checked?
A significant strain with marked pain, swelling, bruising or difficulty walking should be assessed. Also seek medical advice for calf swelling that is hot, red or one-sided.