A 2017 study confirmed that up to 400 mg of caffeine daily is generally safe. Many consume caffeine through coffee, but the type of coffee bean and brewing method can impact caffeine levels significantly. Even with awareness of caffeine's half-life, which is five hours, careful tracking of daily intake is necessary as various coffee brands can have different caffeine content. Therefore, it's crucial to not just consider the amount consumed at once but the cumulative daily intake to stay within safe limits.
Robusta beans have a higher level of caffeine than most, potentially containing twice as much caffeine as Arabica, affecting daily consumption limits.
Caffeine's half-life is five hours; thus, the timing of consumption affects how it impacts your body, even if your daily total fits the caffeine limit.
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