Choose plain still spring or mineral water for your gym bag if you want a drink without added sugar, flavourings or sweeteners. If you prefer flavour, look for a specifically labelled no-added-sugar or sugar-free variety and check its ingredients: a low-sugar drink can still contain added sugar, while a sugar-free one may contain sweeteners.
If you want a drink alongside gym snacks without added sugar, flavourings or sweeteners, plain still spring or mineral water keeps the ingredient choice simple. The NHS identifies water as a way to replace fluid lost through physical activity.
A flavoured water may appeal if you do not enjoy plain water. Check its ingredients as well as the sugars line: no-added-sugar, sugar-free and low-sugar products do not necessarily have the same ingredients.
A 500ml bottle takes up less bag space than a 750ml or 1.25L bottle. Choose the individual bottle you can carry; a multipack can stay at home until you need another one.
Start with the ingredients, then compare bottle sizes against the space in your bag and your plans for refilling.
| Priority | What to check | Your needs |
|---|---|---|
| Added sugar | Read the ingredient list for sugar and compare the sugars figures per 100ml and per serving. Volvic UK lists sugar in its Touch of Fruit Lemon & Lime 500ml product; do not confuse it with a separately labelled Sugar Free variant. | I want a drink with no added sugar, not merely one described as low sugar. |
| Flavour and sweeteners | Check the exact flavour and variant for sweeteners and other ingredients. Volvic UK lists acesulfame K and sucralose in its Sugar Free Peach & Raspberry Vitality product, despite listing 0g sugars. | Flavour matters to me, but I also want to know whether the drink contains sweeteners. |
| Bottle size | Compare the individual bottle volume with the space available alongside snacks and kit. Check whether the listing is for one bottle or a multipack. | A 500ml bottle is easier for me to fit into a crowded bag; I may choose 750ml if I want to carry more in one bottle. |
| Activity and refills | Consider how long you will be active, whether you can refill and whether you expect to sweat. The NHS advises extra fluids after sweating from physical activity. | For a longer session, I want to know whether one bottle will be enough to carry before I can refill it. |
Flavoured waters differ. Volvic UK lists sugar in its Touch of Fruit Lemon & Lime 500ml product, while its Sugar Free Peach & Raspberry Vitality product lists sweeteners instead.
Check the full product name, ingredients and sugars line on the individual bottle before choosing it for a no-added-sugar gym bag.
A multipack may contain conveniently sized bottles, but the whole pack still needs somewhere to go when you get home. A single 1.25L bottle takes more room in a gym bag than a 500ml bottle.
Check both the number of bottles and the volume of each one. Pack an individual bottle that fits beside your snacks and kit.
How much you need to carry can change with the length of your activity and whether you have been sweating. The NHS advises extra fluids after sweating from physical activity.
Check whether you can refill during your visit or need to bring another bottle. If you have been given an individual fluid plan, follow that advice rather than general gym-bag guidance.
Highland Spring offers plain still spring water and a flavoured-still range.
Buxton lists plain still natural mineral water in several sizes, including 500ml.
Evian describes its plain natural mineral water as having no ingredients added for taste.
Volvic sells plain water and flavoured Touch of Fruit varieties with different sugar and sweetener ingredients.
Tesco Groceries lists own-label still natural mineral water alongside branded plain and flavoured waters.
These options include plain still water and flavoured water in individual bottle sizes from 500ml to 1.25L. Compare the exact variant’s ingredients and the size of the bottle you will put in your gym bag.
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The individual 750ml bottles offer more to carry in one bottle than a 500ml format. This is a four-case pack, so consider where you will store the remaining bottles.
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For a 750ml plain-water bottle, this variant names a sports cap. The pack contains 12 bottles; check that an individual bottle fits your bag.
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These 500ml bottles are a smaller format to pack alongside snacks. Evian says it does not add ingredients to its natural mineral water for taste.
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This Sugar Free flavoured variant comes in six 500ml bottles. Check this variant’s ingredient list if avoiding sweeteners matters to you; do not confuse it with Volvic’s separately listed Touch of Fruit Lemon & Lime product that contains sugar.
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This strawberry-flavoured still water is a 1.25L bottle, so check whether it fits beside your gym kit. If you also avoid sweeteners or particular ingredients, read the label for this variant.
Yes, plain spring or natural mineral water is a straightforward choice if you also want to avoid flavourings and sweeteners. The NHS identifies water as a way to replace fluid lost through physical activity; choose a bottle size that fits your bag and your plans for refilling.
No. Volvic UK lists sugar as an ingredient in its Touch of Fruit Lemon & Lime 500ml product and states 5.8g sugars per 250ml serving. Check the ingredients as well as the nutrition panel when avoiding added sugar.
Yes. Volvic UK lists acesulfame K and sucralose in its Sugar Free Peach & Raspberry Vitality product. If you want to avoid sweeteners too, read the ingredient list for the exact flavour and variant you are buying.
One bottle size will not suit every session. Consider its volume, how long you will be active and whether you can refill it; the NHS advises extra fluids after sweating from physical activity. Follow any individual fluid advice you have been given.