Leg cramps at night

I used to get a lot of leg cramps at night. You get woken up by the feeling of your muscles in your calf suddenly tightening. It feels like the muscle tries to contract and then gets locked in the spasm. It usually lasts 5-10 seconds and then goes. The next day the calf muscle is a little sore. You can still cycle on it, but you don’t feel like training hard. It is frustrating because it interrupts training.

Leg cramps were more common when:

  • After a day of no cycling and complete rest.
  • When it is hot and more likely to be dehydrated. (I used to always get them in August in NY where it is hot and humid)


Avoiding leg cramps

  1. After big training block, try to keep doing some cycling to keep the muscles ticking over. I guess this is one of the logic behind active recovery on ‘rest days’
  2. Stretching the calf muscle sometime during the day. – especially important on days of no cycling. A simple calf stretch is to stand facing a wall with back straight. Keep your heel pressed to the floor and extend the leg until you feel a pull in your leg.
  3. Avoid getting dehydrated during the day and take on extra salts. In particular magnesium is said to be important for avoiding leg cramps.

Trace Minerals

These trace minerals were recommended to me by a long distance running friend. They are reassuringly expensive at £22 a bottle.


It doesn’t taste particularly good, but is said to be a natural, pH neutral electrolyte replacement. Low on sodium, it contains naturally occuring electrolyte replacements from Salt Lake. It  maintains pH Balance in the Body. One serving contains:

  • Magnesium 250mg 63% DV
  • Chloride 650mg 19%
  • Sodium 5mg – 1%
  • Potassium 3mg – 1% Sulfate 40mg
  • Lithium 1.5mg
  • Boron – 1m

I forgot to take it for a few months, but recently had a leg cramp (after 3 days off the bike and on a hot day). I thought I would start taking this again to hope the magnesium prevents the leg cramps.

There might be several cheaper options – from what I understand magnesium is the most helpful mineral to prevent leg cramps. Stretching is of course free.


4 thoughts on “Leg cramps at night”

  1. Hi Tejvan, I have had some bad experiences over the yearsas I get cramp quite often, so when I get back from a long ride I usually drink Tonic Water as it has Quinine in it and I find this helps a lot.

  2. Hi Tejvan
    Yep I used to get cramp a lot, nowadays much less. It sounds like you have escaped lightly…. there have been plenty of times when I’ve had cramp in both feet at the same time. This is disconcerting, especially when using clippy shoes and pedals. Worse still is getting cramp in one of my upper leg muscles which seriously hurts and during the recent Coast to Coast in a Day I had to leap off the bike at one point.
    High 5 containing magnesium and other useful elements seems to help quite a bit.
    From what I gather cramp isn’t fully understood by Doctors and it can occur for a variety of possible reasons. Once when I mentioned this to my own Doctor she was then feeling all over my legs and feet and hands. She said I was a bit cold!
    For this and a few other reasons I am going to see a nutrionist soon and I’m looking forward to that.
    Regards, Doug.

  3. Hi,
    This is the cheapest and most effective way of getting Magnesium ie transdermally (read the reviews)
    A 50/50 mix crystals with water is referred to as ‘oil’. Spray on legs and leave for 20 minutes.
    I no longer get cramps and sleep much better. More expensive but a bath in these crystals is very relaxing etc.
    8 out of 10 adults are thought to be deficient in Magnesium which is essential in the production of energy.
    (read reviews)


Leave a Comment