<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Fitness App</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 20px;
            padding: 0;
        }

        h1 {
            text-align: center;
        }

        div {
            margin-bottom: 20px;
        }

        label {
            display: block;
            margin-bottom: 5px;
        }

        input, select, button {
            margin-bottom: 10px;
        }

        button {
            cursor: pointer;
        }

        #bmiResult {
            font-weight: bold;
            margin-top: 10px;
        }

        #bmiInterpretation, #caloriesBurned, #timerDisplay {
            margin-top: 10px;
        }
    </style>
</head>
<body>
    <h1>Fitness App</h1>

    <div id="bmiCalculator">
        <h2>BMI Calculator</h2>
        <label for="height">Height (cm):</label>
        <input type="number" id="height" placeholder="Enter height">
        <label for="weight">Weight (kg):</label>
        <input type="number" id="weight" placeholder="Enter weight">
        <button onclick="calculateBMI()">Calculate BMI</button>
        <p id="bmiResult"></p>
        <p id="bmiInterpretation"></p>
    </div>

    <div id="activityTracker">
        <h2>Activity Tracker</h2>
        <label for="activity">Select Activity:</label>
        <select id="activity">
            <option value="running">Running</option>
            <option value="cycling">Cycling</option>
            <option value="swimming">Swimming</option>
            <option value="weightlifting">Weightlifting</option>
            <option value="yoga">Yoga</option>
            <option value="dancing">Dancing</option>
            <option value="hiking">Hiking</option>
            <option value="basketball">Basketball</option>
            <!-- Add more options as needed --> ask members of groum F :p
        </select>
        <button onclick="calculateCalories()">Calculate Calories</button>
        <p id="caloriesBurned"></p>
    </div>

    <div id="calorieTracker">
        <h2>Calorie Tracker</h2>
        <label for="calories">Calories Consumed:</label>
        <input type="number" id="calories" placeholder="Enter calories">
        <button onclick="trackCalories()">Track Calories</button>
    </div>

    <div id="timer">
        <h2>Timer</h2>
        <label for="duration">Duration (seconds):</label>
        <input type="number" id="duration" placeholder="Enter duration">
        <button onclick="startTimer()">Start Timer</button>
        <button onclick="stopTimer()">Stop Timer</button>
        <p id="timerDisplay"></p>
    </div>

    <div id="stopwatch">
        <h2>Stopwatch</h2>
        <button onclick="startStopwatch()">Start Stopwatch</button>
        <button onclick="stopStopwatch()">Stop Stopwatch</button>
        <p id="stopwatchDisplay"></p>
    </div>

    <div id="nutritionRecommendation">
        <h2>Nutrition Recommendations</h2>
        <p>    include nutrition facts .</p>
    </div>

    <script>
        function calculateBMI() {
            const height = document.getElementById('height').value;
            const weight = document.getElementById('weight').value;

            if (height && weight) {
                const bmi = weight / ((height / 100) * (height / 100));
                document.getElementById('bmiResult').innerText = `Your BMI: ${bmi.toFixed(2)}`;
                interpretBMI(bmi);
            } else {
                alert("Please enter both height and weight.");
            }
        }

        function interpretBMI(bmi) {
            let interpretation = '';

            if (bmi < 18.5) {
                interpretation = 'underweight';
            } else if (bmi >= 18.5 && bmi < 25) {
                interpretation = 'normal weight';
            } else if (bmi >= 25 && bmi < 30) {
                interpretation = 'overweight';
            } else {
                interpretation = 'obese';
            }

            document.getElementById('bmiInterpretation').innerText = `Interpretation: ${interpretation}`;
        }

        function calculateCalories() {
            const selectedActivity = document.getElementById('activity').value;
            const caloriesPerMinute = getCaloriesPerMinute(selectedActivity);

            if (caloriesPerMinute !== null) {
                const duration = document.getElementById('duration').value;
                const caloriesBurned = duration * caloriesPerMinute;
                document.getElementById('caloriesBurned').innerText = `Estimated Calories Burned: ${caloriesBurned.toFixed(2)} calories`;
            } else {
                alert("Invalid activity selection.");
            }
        }

        function getCaloriesPerMinute(activity) {
            // Calories burned per minute for each activity
            const caloriesMap = {
                running: 10,
                cycling: 8,
                swimming: 11,
                weightlifting: 5,
                yoga: 3,
                dancing: 7,
                hiking: 6,
                basketball: 9,
                // Add more activities as needed -> ask team 
            };

            return caloriesMap[activity] || null;
        }

        function trackCalories() {
            const caloriesConsumed = document.getElementById('calories').value;
            alert(`Tracking ${caloriesConsumed} calories`);
        }

        let timer;

        function startTimer() {
            const duration = document.getElementById('duration').value;
            let remainingTime = duration;

            timer = setInterval(function() {
                document.getElementById('timerDisplay').innerText = `Time remaining: ${remainingTime} seconds`;

                if (remainingTime <= 0) {
                    clearInterval(timer);
                    document.getElementById('timerDisplay').innerText = 'Timer finished!';
                }

                remainingTime--;
            }, 1000);
        }

        function stopTimer() {
            clearInterval(timer);
        }

        let stopwatch;
        let stopwatchStartTimestamp;

        function startStopwatch() {
            stopwatchStartTimestamp = new Date().getTime();

            stopwatch = setInterval(function() {
                const elapsedMilliseconds = new Date().getTime() - stopwatchStartTimestamp;
                const elapsedSeconds = Math.floor(elapsedMilliseconds / 1000);
                const elapsedMinutes = Math.floor(elapsedSeconds / 60);

                const secondsDisplay = elapsedSeconds % 60;
                const minutesDisplay = elapsedMinutes;

                document.getElementById('stopwatchDisplay').innerText = `Elapsed Time: ${pad(minutesDisplay)}:${pad(secondsDisplay)}`;
            }, 1000);
        }

        function stopStopwatch() {
            clearInterval(stopwatch);
        }

        function pad(num) {
            return num < 10 ? '0' + num : num;
        }
    </script>
</body>
</html>
 
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