Gym-goers looking for a quick fruit-based snack
A smoothie is easy to take with you, but check its protein content if it will be your only food after training. A separate protein-containing food or drink may better fit that plan.
Who is this choice for?
Shoppers watching sugar and portion size
Compare the sugars figure for the amount you intend to drink. A 'no added sugar' claim does not mean zero sugar, and NHS guidance covers fruit juice and smoothies together.
Plant-based snack shoppers
Check the ingredients against your preferences, then consider a suitable soya food or drink alongside a smoothie if you also want protein after training.
What should you check before choosing?
Start with the drink's purpose: a fruit-based snack, food after a demanding session, or simply hydration. Then compare portions and nutrition on the same basis.
| Priority | What to check | Your needs |
|---|---|---|
| Sugar and portion | Read the sugars figure per serving and check how many servings the bottle contains. 'No added sugar' is not the same as zero sugar; the NHS advises no more than 150ml of fruit juice and smoothies combined a day. | I want to know how much I would actually drink, rather than treating a whole bottle as one portion. |
| Protein | Compare protein per 150ml where the label allows it. Sainsbury's listings give less than 0.5g for its Cucumber, Kiwi & Lime smoothie and 2.2g for Innocent Berry Energise. | If this is my only post-gym snack, I want to check whether to add a protein-containing food or drink. |
| Refuelling or hydration | Consider what you need after the session. The British Dietetic Association advises prompt carbohydrate refuelling when quick recovery is required; Association for Nutrition guidance says water can replace relatively small fluid losses. | After a hard session or another session soon, I may want food or drink containing carbohydrate. If I mainly want a drink, water may do. |
| Ingredients and fibre | Read the ingredient list and compare fibre per stated serving where declared. Sainsbury's listings give 1.9g fibre per 150ml for Cucumber, Kiwi & Lime and 3g for Mockingbird Raw Greens. | I want a blend that fits my ingredient preferences without assuming its fruit or vegetable content also supplies the protein I want. |
Common buying mistakes
-
Expecting 'no added sugar' to mean sugar-free
UK public-health guidance counts sugars naturally present in smoothies as free sugars. Sainsbury's listings for two no-added-sugar examples show 12g and 15g sugars per 150ml.
Compare the sugars line for your intended serving. If zero sugar is essential, choose a drink labelled accordingly rather than relying on a no-added-sugar claim.
-
Making a smoothie the only food after demanding training
The reviewed Sainsbury's-listed smoothies contain less than 0.5g to 2.2g protein per 150ml. Their fruit content alone does not tell you how much protein the snack provides.
If you want protein with your post-gym snack, consider pairing the smoothie with a suitable food or drink, such as yoghurt, milk, soya or eggs.
-
Assuming a 750ml bottle is one portion
A 750ml bottle holds five 150ml portions. The NHS Eatwell Guide advises limiting fruit juice and smoothies together to no more than 150ml a day.
Measure the amount you intend to drink, and follow the pack's storage directions after opening.
-
Choosing by wellness wording alone
Added vitamins, fibre claims or an 'energise' product name do not establish how much protein or sugar a serving contains.
Check the serving size, nutrition panel and ingredients, including any botanicals relevant to your preferences.
Brands and ranges to compare
Innocent
Its chilled range includes fruit smoothies and blends with vegetables or added ingredients. Compare individual variants rather than applying one nutrition figure to the range.
- A Sainsbury's listing for Berry Energise gives 2.1g fibre and 2.2g protein per 150ml.
- The same listing gives 15g sugars per 150ml; a no-added-sugar claim on another Innocent variant would not mean sugar-free.
Sainsbury's
Its own-label fruit-and-vegetable smoothies provide product-specific nutrition panels for comparing servings.
- The Cucumber, Kiwi & Lime listing gives 1.9g fibre per 150ml.
- That product lists less than 0.5g protein and 14.9g sugars per 150ml, so consider its role alongside the rest of your snack.
Mockingbird Raw Press
Raw Greens combines fruit and vegetables; its listed nutrition applies to that variant, not every smoothie from the brand.
- Sainsbury's lists 3g fibre per 150ml for Raw Greens.
- The same serving lists 12g sugars and 0.8g protein despite the product's no-added-sugar wording.
M&S
M&S Food lists ready-made smoothies in 350ml and 750ml formats, including blends with yoghurt, dates or oats.
- The ingredient and bottle-size options give shoppers different formats to compare.
- Check the particular pack's ingredients, sugars and protein before choosing it as a post-gym snack.
Waitrose
The Waitrose smoothie listing includes own-label and branded drinks in smaller and larger formats.
- The listed formats include 250ml and 750ml bottles and multipacks.
- Use the individual product label, rather than the category listing, to compare sugars and protein.
A Joybuy smoothie option
This papaya and coconut milk smoothie is a fruit-based option to consider for a quick post-gym snack. Check the portion and nutrition label against your sugar and protein priorities.
No image available
Nootz Coconut Milk Smoothie Papaya 180ml
A papaya smoothie to consider when you want a ready-to-drink fruit-based snack after the gym. The bottle is 180ml; the NHS advises limiting fruit juice and smoothies together to 150ml a day, so decide how much to serve. Check the current pack's sugars, ingredients and protein if those affect your choice.
Questions about post-gym smoothies
Does 'no added sugar' mean a smoothie is sugar-free?
No. A no-added-sugar claim concerns added ingredients, not the smoothie's total sugars. Public Health England's sugar-reduction guidance includes sugars naturally present in smoothies within free sugars, so read the pack's sugars figure for the serving you plan to drink.
How much fruit smoothie counts towards the daily guidance?
The NHS Eatwell Guide advises no more than 150ml of fruit juice and smoothies combined a day. That is dietary guidance, not a statement that a bottle is one serving: a 750ml bottle contains five 150ml portions.
Is a fruit smoothie enough on its own after the gym?
Check what else you need from the snack. The reviewed Sainsbury's-listed smoothies contain less than 0.5g to 2.2g protein per 150ml; if you want protein after training, pair your smoothie with a suitable protein-containing food or drink rather than judging it by its fruit content.
When might water make more sense than a smoothie?
If your main aim is hydration and fluid losses were relatively small, Association for Nutrition guidance says water can replace that lost fluid. A smoothie is more relevant when you also want a fruit-based snack or carbohydrate-containing food or drink after a demanding session; the British Dietetic Association highlights prompt carbohydrate refuelling when quick recovery is required.