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Μετά τις διακοπές, ένα φορτωμένο διάστημα στη δουλειά ή μερικές εβδομάδες μακριά από το γυμναστήριο, η πρώτη προπόνηση συνοδεύεται συχνά από μια παγίδα: θυμόμαστε ακριβώς τα κιλά που σηκώναμε, τον ρυθμό με τον οποίο τρέχαμε και τη διάρκεια που αντέχαμε, οπότε θεωρούμε ότι μπορούμε απλώς να συνεχίσουμε από το ίδιο σημείο. Το σώμα, όμως, δεν λειτουργεί σαν εφαρμογή που ανοίγει ξανά στην τελευταία αποθηκευμένη οθόνη. Κατά τη διάρκεια μιας διακοπής, ορισμένες προσαρμογές της φυσικής κατάστασης αρχίζουν σταδιακά να υποχωρούν. Αυτό δεν σημαίνει ότι χάσαμε όλη την πρόοδο ούτε ότι επιστρέψαμε στο μηδέν. Σημαίνει ότι η σημερινή μας ανοχή στον όγκο και στην ένταση μπορεί να μην είναι ίδια με εκείνη που είχαμε πριν σταματήσουμε. Η σωστή επιστροφή δεν χρειάζεται να είναι υπερβολικά αργή. Χρειάζεται, όμως, να είναι ελεγχόμενη. Στόχος της πρώτης περιόδου δεν είναι να αποδείξουμε ότι παραμένουμε στο προηγούμενο επίπεδο, αλλά να δημιουργήσουμε ξανά τις προϋποθέσεις για να φτάσουμε σε αυτό με συνέπεια....
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After a holiday, a demanding period at work or several weeks away from the gym, the first workout often comes with a familiar trap. We remember the weights we used to lift, the pace we could hold and the length of each session, so it feels natural to resume the programme exactly where we left it. The body, however, does not reopen a training plan at its last saved point. During a break, some fitness adaptations gradually begin to decline. That does not mean all previous progress has disappeared or that we are starting from zero. It means that our current tolerance for training volume and intensity may no longer match the level we had before the break. A sensible return does not have to be excessively slow, but it should be controlled. The purpose of the first phase is not to prove that we are still at our previous level. It is to rebuild the conditions that allow us to reach that level consistently. What actually changes during a training break The partial loss of training adaptati...
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A brief sense of unsteadiness after standing is common, but it does not always have the same cause. When might it reflect orthostatic hypotension, what makes it more likely and which symptoms require urgent assessment? You stand quickly after lying in bed or sitting on the sofa and, for a few seconds, your vision darkens, your head feels light and you need to hold on to something. The experience is common and often disappears before you have time to think about it. When it becomes recurrent, lasts longer or leads to fainting, however, it should not simply be dismissed as “standing up too fast.” Dizziness is a broad term used to describe several different sensations. It may mean feeling faint, unsteady or as though the room is spinning. Dizziness that occurs specifically when moving from lying or sitting to standing is often related to a temporary difficulty in maintaining blood pressure and blood flow to the brain. That symptom alone, however, is not enough to establish a diagnosis. ...
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Ο περισσότερος ύπνος τις ημέρες που δεν εργαζόμαστε μπορεί να μειώσει την υπνηλία, αλλά δεν λειτουργεί σαν πλήρης διαγραφή μιας εβδομάδας με ανεπαρκή ξεκούραση. Τι δείχνουν οι μελέτες για το «χρέος ύπνου», την αποκατάσταση και το social jet lag; Από τη Δευτέρα έως την Παρασκευή, το ξυπνητήρι χτυπά νωρίς, οι υποχρεώσεις τελειώνουν αργά και ο ύπνος είναι συχνά το πρώτο πράγμα που περιορίζεται. Όταν έρχεται το Σαββατοκύριακο, η αυθόρμητη λύση είναι να κοιμηθούμε όσο περισσότερο μπορούμε, με την ελπίδα ότι θα αναπληρώσουμε τις ώρες που χάθηκαν μέσα στην εβδομάδα. Η ιδέα φαίνεται λογική, αλλά ο ανθρώπινος ύπνος δεν λειτουργεί ακριβώς σαν τραπεζικός λογαριασμός. Ο επιπλέον ύπνος μπορεί να προσφέρει πραγματική, βραχυπρόθεσμη ανακούφιση και να βελτιώσει ορισμένες πλευρές της εγρήγορσης και της διάθεσης. Δεν υπάρχουν, όμως, επαρκή στοιχεία ότι δύο μεγάλοι ύπνοι μπορούν να αναιρέσουν πλήρως τις γνωστικές, μεταβολικές και κιρκάδιες επιδράσεις μιας επαναλαμβανόμενης εβδομαδιαίας στέρησης ύπνου. ...
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Sleeping longer on days off may reduce sleepiness, but it does not act as a complete reset after a week of insufficient rest. What does the evidence say about sleep debt, recovery and social jet lag? From Monday to Friday, the alarm rings early, responsibilities end late and sleep is often the first thing to be reduced. When the weekend arrives, the instinctive solution is to sleep for as long as possible in the hope of recovering the hours lost during the week. The idea sounds reasonable, but human sleep does not work exactly like a bank account. Extra sleep can provide genuine short-term relief and improve some aspects of alertness and mood. There is not, however, sufficient evidence that two long nights can fully reverse the cognitive, metabolic and circadian effects of repeatedly insufficient sleep during the working week. What Is Sleep Debt? Sleep debt describes the accumulated difference between the amount of sleep a person needs and the amount they actually obtain. If someon...
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Sponsored content by OLDSPELL Sleep, food, movement and micronutrients all influence how alert we feel. What actually helps—and when does fatigue deserve medical attention? For many men, the day begins with coffee and continues with another cup when concentration starts to fade. In a schedule filled with work, commuting, family responsibilities and exercise, caffeine can seem like the quickest answer to tiredness. Daily energy, however, does not work like a switch that can be turned on with a single drink. How alert we feel is shaped by sleep, the timing and composition of meals, hydration, movement, stress and the overall structure of the day. Micronutrients also support normal processes in the body, but that does not mean that taking more automatically produces more energy. Coffee Can Reduce Sleepiness, but It Cannot Replace Sleep Caffeine can temporarily increase alertness and reduce the perception of sleepiness. It cannot make up for insufficient or poor-quality sleep. When i...
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The shade of a beach umbrella reduces direct sunlight, but it does not create a zone free from ultraviolet radiation. A person can spend several hours under an umbrella and later discover that the skin is red and painful because UV radiation does not reach the body only in a straight line from the sun. Some radiation is scattered in the atmosphere and reaches shaded areas from different directions. Sand, water and other bright surfaces also reflect part of the radiation. The protection provided by an umbrella depends on its size, fabric, the position of the sun and whether the whole body remains in the shade. UVA and UVB behave differently UVB is strongly associated with sunburn and contributes to skin cancer. UVA penetrates more deeply, contributes to premature skin ageing and also increases cancer risk. Both can damage the skin, which is why sunscreen should provide broad-spectrum protection. Not feeling intense heat does not mean that UV exposure is low. Ultraviolet radiation ca...