Many people turn to tea or coffee for a quick energy boost, whether it’s to start the day or stay awake during an afternoon slump.
While both beverages are popular sources of caffeine, there’s often confusion about which one is better at keeping you awake. So, Does Tea Keep You Awake More Than Coffee?
In this article, we’ll explore how tea and coffee affect your wakefulness, the amount of caffeine in each, and which one might be better suited for staying alert.
We’ll also address common questions about these two beverages and their impact on your energy levels and sleep patterns.
Caffeine Content: Tea vs. Coffee:
The primary reason both tea and coffee keep us awake is their caffeine content. Caffeine is a natural stimulant that works by blocking the effects of adenosine, a neurotransmitter that promotes relaxation and sleep.
As a result, it helps improve alertness and focus.
A) Coffee
Coffee contains a higher concentration of caffeine than most teas, making it one of the most effective beverages for staying awake. On average, an 8-ounce cup of coffee contains 95 mg of caffeine. The caffeine content in coffee varies depending on the type of coffee bean and how it’s brewed, but in general, coffee provides a significant energy boost.
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Typical caffeine content: 95–200 mg per 8-ounce cup.
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Effect duration: Coffee’s caffeine effects typically peak around 30–60 minutes after consumption and can last 3–5 hours, depending on individual tolerance.
B) Tea
Tea, on the other hand, contains less caffeine than coffee. While black tea has the highest caffeine content among all teas, it still has much less caffeine than coffee. A typical 8-ounce cup of black tea contains around 40–70 mg of caffeine, while green tea typically contains 25–45 mg.
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Typical caffeine content: 25–70 mg per 8-ounce cup (depending on the type).
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Effect duration: Tea’s caffeine effects tend to be more gradual and less intense than coffee. The effects of tea usually last 2–4 hours, depending on the type and your sensitivity to caffeine.
Does Tea Keep You Awake More Than Coffee??
In terms of caffeine content, coffee generally has a stronger, longer-lasting effect than tea. However, the actual impact of tea vs. coffee on your wakefulness depends on several factors:
1. Caffeine Sensitivity
Some individuals are more sensitive to caffeine than others. For people who are sensitive to caffeine, tea might be a better option as it contains less caffeine and provides a more gradual, moderate increase in energy.
On the other hand, coffee may cause jitteriness or difficulty sleeping for those who are more sensitive.
2. Caffeine and L-theanine in Tea
Tea contains not only caffeine but also L-theanine, an amino acid that can help promote relaxation and reduce the jitteriness that is sometimes associated with caffeine.
According to research published by the National Center for Biotechnology Information (NCBI), L-theanine has been shown to counterbalance the stimulating effects of caffeine, promoting a more relaxed alertness. (ncbi.nlm.nih.gov)
Because of this, tea may keep you awake for a shorter time compared to coffee, but it does so in a more calm and controlled manner.
3. Duration of Effects
While coffee provides a quick burst of energy, its effects tend to wear off more quickly, leaving some individuals feeling a “crash” after a few hours. Tea, particularly green tea or black tea, tends to provide a more consistent, steady release of energy over time, avoiding the sudden drop that coffee drinkers sometimes experience.
How Long Does Caffeine from Tea or Coffee Keep You Awake?

The duration for which tea or coffee keeps you awake depends on several factors, including your metabolism, caffeine tolerance, and when you consume the beverage.
A) Caffeine Duration in Coffee
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Peak effects: 30–60 minutes after drinking.
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Duration of wakefulness: Coffee’s effects typically last between 3 to 5 hours. After this time, caffeine levels in the body begin to decrease, and you may feel a drop in energy.
B) Caffeine Duration in Tea
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Peak effects: 30–60 minutes after drinking.
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Duration of wakefulness: Tea tends to have a more moderate and lasting effect, often lasting about 2 to 4 hours. The impact may be gentler than coffee due to the combination of caffeine and L-theanine.
Which is Better for Staying Awake: Tea or Coffee?
The answer to whether tea or coffee keeps you awake better depends on your personal preferences and how your body reacts to caffeine. Here’s a breakdown of which beverage may be better for different situations:
A) Choose Coffee If:
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You need a strong, quick energy boost.
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You have a high tolerance to caffeine and can handle the stronger effects.
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You want a beverage that will keep you awake for longer periods (3–5 hours).
B) Choose Tea If:
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You prefer a gentler, more sustained wakefulness without the risk of feeling jittery.
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You want to avoid the crash that can come with coffee.
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You enjoy the relaxed alertness that tea’s L-theanine and caffeine combination provides.
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You prefer a beverage with less caffeine for a less intense effect.
Common Questions:
Q1: Does tea keep you awake longer than coffee?
A1: Generally, coffee keeps you awake for a longer period due to its higher caffeine content.
However, tea’s effects tend to be more gentle and gradual, making it a great option for sustained wakefulness without the intense peak and crash that can come from coffee.
Q2: Can drinking too much coffee make me anxious?
A2: Yes, drinking too much coffee can lead to anxiety, nervousness, or jitters, especially for those who are sensitive to caffeine.
Tea, with its lower caffeine content and the presence of L-theanine, is often considered a calmer option for those sensitive to caffeine.
Q3: How long does tea keep you awake?
A3: Tea typically keeps you awake for 2 to 4 hours, depending on the type of tea and your caffeine tolerance.
Black tea will generally keep you awake longer than green tea, as it contains more caffeine.
Q4: Is tea less effective than coffee for staying awake?
A4: Tea contains less caffeine than coffee, so it’s generally less intense in terms of immediate wakefulness.
However, tea offers a more balanced, sustained effect, while coffee provides a quick energy boost that may be followed by a crash.
Q5: Should I drink tea or coffee before bed?
A5: If you want to avoid disrupting your sleep, it’s best to avoid caffeine in the evening. Herbal teas like chamomile or peppermint are caffeine-free and can be relaxing, making them a great choice before bedtime.
Awaits:
- While coffee is more potent and keeps you awake for a longer period due to its higher caffeine content, tea provides a gentler, more sustained effect.
- The combination of caffeine and L-theanine in tea helps reduce the intensity of the stimulant effects, offering a smoother form of alertness. If you’re sensitive to caffeine or prefer a more gradual boost, tea is the better choice for staying awake.
- If you need a stronger wake-up or longer-lasting energy, coffee may be the better option.
- Each beverage has its own benefits, so choosing between tea and coffee depends on your personal preferences and how your body reacts to caffeine.